Matrix string theory. Medical search. Frequent questions

My work is concerned with various aspects of quantum gravity and unified theories, especially supergravity, superstring and supermembrane theories. (mpg.de)
(iii) Search for a realization of hyperbolic Kac Moody algebras, and especially E10, in gravity and supergravity (and possibly M Theory) by generalizing and extending the BKL-type description of the chaotic oscillations of the metric near a spacelike singularity. (mpg.de)
understanding the role of d=11 supergravity in string theory. (mpg.de)
I would also like to understand better some of the conceptual issues of quantum gravity in the framework of supergravity and string theory. (mpg.de)
Much has been learned about those special sectors of M-theory which can be described by string theories or supergravity theories, and of the remarkable duality symmetries that relate such sectors, but much of M-theory remains a mystery. (newton.ac.uk)
The research includes topics like string theory, supergravity and higher-spin gravity, conformal field theory, quantum field theory on non-commutative space-times and many-body quantum physics. (univie.ac.at)
Green connects string theory to the ideas that led to supergravity, and he explains why he does not like the term "revolution" in relation to advances in string theory to explain what was happening between 1981-1984. (aip.org)

In physics, matrix string theory is a set of equations that describe superstring theory in a non-perturbative framework. (wikipedia.org)
M. Sato, "On Supersymmetry of the Covariant 3-Algebra Model for M-Theory," Journal of Modern Physics , Vol. 3 No. 11, 2012, pp. 1813-1818. (scirp.org)
how successful has this theory been in comparison to string theory, on particle physics? (physicsforums.com)
String Data hosts Mathematicians, Computer Scientists and String Theorists to talk about and exchange new ideas on the interface between Machine Learning, Data Science and Fundamental Physics. (cern.ch)
Asymptotics is one of the most powerful mathematical tools in theoretical physics, and recent progress in the modern theory of resurgent asymptotic analysis (using trans-series) has recently begun to be applied systematically to many current problems of interest in physics, such as matrix models, string theory, and quantum field theory. (ucsb.edu)
The goal of this conference is to bring together experts in these diverse fields of physics and mathematics along with experts in areas such as gauge theory, string theory, and lattice theory, in order to exchange new ideas and techniques, and to identify the salient problems to be addressed in the near future. (ucsb.edu)
ABSTRACT: One fundamental problem of modern physics is the search for a theory of everything able to explain the nature of space-time, what matter is and how matter interacts. (scirp.org)
S. James Gates Jr. is Toll Professor of Physics and Director of the Center for String and Particle Theory at the University of Maryland in College Park. (onbeing.org)
And his work on supersymmetry - a feature of the universe that might help illustrate string theory - is part of the greatest controversy in physics since Einstein. (onbeing.org)
The connection between string physics and the quantum math may now lead the way to an answer. (columbia.edu)
I'll write more soon about those "mysterious rules of quantum physics", but I just don't see at all how string field theory (which supposedly is based on quantum mechanics…) makes anything about quantum mechanics less mysterious. (columbia.edu)
If string interactions really are responsible for the rules of quantum physics, maybe there's some connection between the multiple quantum realities and the superstring landscape. (columbia.edu)
ICTP has awarded its 2023 Dirac Medal to four physicists who have made wide-ranging contributions to string theory, a mathematical framework in fundamental physics that aims to describe the entirety of the whole universe. (ictp.it)
The Noether-Lefschetz Problem and Gauge-Group-Resolved Landscapes: F-Theory on K3 x K3 as a Test Case[J]. Journal of High Energy Physics, 2014, 2014(4). (tsinghua.edu.cn)
Robbert Dijkgraaf's focus is on string theory, quantum gravity, and the interface between mathematics and particle physics, bringing them together in an accessible way, looking at sciences, the arts and other matters. (gresham.ac.uk)
Of course there are matrixes in physics/maths. (interfaith.org)
The two main goals of current work in fundamental physics are (i) to find a quantum theory of gravity that avoids the inconsistencies that arise from trying to reconcile Einstein's theory with quantum mechanics, and (ii) to find a unified theory of all the forces and particles of nature. (newton.ac.uk)
The Mathematical physics group at the University of Vienna studies theoretical and mathematical questions in quantum field theory, gravity and quantum gravity. (univie.ac.at)
Green discusses his early interests in physics and the opportunities that led to his enrollment at Cambridge, and he conveys Geoff Chew's influence with his ideas on S-matrix and bootstrap theory, which informed his thesis research on hadronic interactions. (aip.org)
Green reflects on winning the Breakthrough Prize, and the supposed aspirational recognition on working to unify the forces which are not yet unified, and he discusses the generational de-coupling of string theory education from particle physics. (aip.org)
Freedman explains his understanding of the term's mathematical physics and physical mathematics, and he bemoans the broad decoupling of experiment and theory in physics. (aip.org)
1On leave from Center for Field Theory and Particle Physics, Department of Physics, Fudan University. (lu.se)

Rational conformal field theory with matrix level and strings on a torus. (tsinghua.edu.cn)
D-geometry and conformal field theory. (newton.ac.uk)

Type IIA string theory can be shown to be equivalent to a maximally supersymmetric two-dimensional gauge theory, the gauge group of which is U(N) for a large value of N. This matrix string theory was first proposed by Luboš Motl in 1997 and later independently in a more complete paper by Robbert Dijkgraaf, Erik Verlinde, and Herman Verlinde. (wikipedia.org)
We examine a natural supersymmetric extension of the bosonic covariant 3-algebra model for M-theory proposed in [1]. (scirp.org)
We study the bosonic matrix model obtained as the high-temperature limit of two-dimensional maximally supersymmetric SU(N) Yang-Mills theory. (uni-regensburg.de)
1 SU( N c ) and U( N c ) supersymmetric gauge theories that are obtained from the N = 2 theory by adding a tree-level superpotential. (projecteuclid.org)
Through the AdS/CFT correspondence this gives an exact description of anomalous scaling dimensions of single trace operators in planar N=4 supersymmetry Yang-Mills theory, its `orbifolds', and beta and gamma-deformed supersymmetric Yang-Mills theory. (uu.nl)
A key issue in my opinion is the apparent incompatibility of a deSitter-type universe and all the (maximally supersymmetric) "supertheories" currently on the market (which strongly prefer Anti-deSitter) and under study as candidates for a unified theory. (mpg.de)

In this context, I have recently become interested in string (or M Theory) cosmology, as I believe that the chaos which occurs in all "supertheories" may invalidate many of the approximations made in standard (e.g. inflationary) cosmology. (mpg.de)

The realisation of spacetime supersymmetry in the open string sector is highly non-trivial and is described explicitly for the solution based on Witten's star product. (uni-muenchen.de)
He explains the meaning of the pronoun "super" in relation to string theory, and he conveys his disappointment that supersymmetry has yet to be observed. (aip.org)

This promising approach to understanding the cosmos is based on a collection of theories called loop quantum gravity, an attempt to merge general relativity and quantum mechanics into a single consistent theory. (physicsforums.com)
I will explain a new 2d gravity/matrix model duality. (pirsa.org)
For large central charge, it reduces to the duality between JT-gravity and the corresponding double-scaled matrix integral. (pirsa.org)
So far, no consensus about the order of the deconfinement transition in this theory has been reached and this hinders progress in understanding the nature of the black hole/black string topology change from the gauge/gravity duality perspective. (uni-regensburg.de)
Moreover, our detailed results confirm the existence of a new partially deconfined phase which describes non-uniform black strings via the gauge/gravity duality. (uni-regensburg.de)
(ii) Exact quantization of such models as "midi-superspace" models of quantum gravity in the framework of the theory of integrable systems, e.g. by means of the so-called isomonodromic ansatz. (mpg.de)
Formulation of quantum gravity or M-theory in D dimensions as a non-gravitational theory in D-1 dimensions. (newton.ac.uk)
Quantum Gravity and M-theory. (newton.ac.uk)
Implications of M-theory for key problems in quantum gravity. (newton.ac.uk)
Witten discusses his current interests in quantum information theory in gravity, and he recounts his childhood in Baltimore and the influence of his father Louis Witten, who is a physicist. (aip.org)

The geometry of supermoduli space dictates many algebraic properties of the string field theory action. (uni-muenchen.de)
Apart from the algebraic constraints dictated by the geometry of supermoduli space the equations of motion or action should reproduce the traditional string S-matrix. (uni-muenchen.de)

Compactification of Matrix Model on a Noncommutative torus is obtained from strings ending on D-branes with background B field. (ac.ir)
We construct an approximation to field theories on the noncommutative torus based on soliton projections and partial isometries which together form a matrix algebra of functions on the sum of two circles. (projecteuclid.org)

The theory admits a dual description in terms of a double-scaled matrix integral whose leading density of states is given by the universal Cardy density of states in a 2d CFT of central charge c, thus motivating us to call the bulk theory the Virasoro minimal string. (pirsa.org)
This situation is in strong contrast to calculations of ground-state properties, in which Kohn-Sham density functional theory (DFT) (Hohenberg 1964, Kohn 1965, 1999, Jones 1989, 2015, Becke 2014) has made applications to complex materials feasible. (lu.se)
A theory corresponding to density-functional theory for calculating the excitation spectra is absent at present. (lu.se)
Hence, a close link to electron density and density-functional theory is established and it is envisaged that a simple approximation along the line of the local-density approximation may be fruitful. (lu.se)
The commonly used method for computing the electronic structure is density functional theory within the local density approximation (LDA) and its variants. (lu.se)

In this thesis, we extend the numerical S-matrix bootstrap program to 1+1d theories with a boundary, where we bootstrap the 1-to-1 reflection matrix (R-matrix). (purdue.edu)

Here, only main steps and principal results of the new theory are presented and discussed, without showing the mathematical concepts and developments contained in the book. (scirp.org)
Mathematical Structures of M-theory. (newton.ac.uk)

Especially the bosonic twist fields and the fermionic spin fields in MST correspond to the string interaction vertices in LCSFT. (projecteuclid.org)
Because of the recursive nature of the solution and its construction in terms of products of various picture deficits, it is possible to relate the S-matrices of various picture deficits and, therefore, relate the S-matrix calculated from the bosonic string products at highest picture deficit with the physical vertices at lowest picture deficit through a series of descent equations. (uni-muenchen.de)

Finally, we derive the dual to the extended analyticity problem and find that the formalism allows for R-matrices which do not saturate unitarity to lie on the boundary of the allowed region. (purdue.edu)

In fact we have infinitely many fake vacua in the perturbation theory, and in order to make realistic predictions, we need a complete formulation of string theory. (ens.fr)
Some theories are proposed as such a formulation based on the matrix models, on which several analyses are being made. (ens.fr)
We have as yet no definition or formulation of the theory, and do not even know what the fundamental degrees of freedom should be. (newton.ac.uk)
The principal aim of the programme is to investigate the structure of M-theory, with an aim of seeking its fundamental formulation. (newton.ac.uk)

Yes, perturbative string theory is an S-matrix theory. (ncatlab.org)
The matrix quantum mechanics is applied to the perturbative dynamics of scalar field theory, to tachyon dynamics in string field theory, and to the Hamiltonian dynamics of noncommutative gauge theory in two dimensions. (projecteuclid.org)
First we describe the traditional construction of perturbative superstring theory as an integral over the supermoduli space of type II world sheets. (uni-muenchen.de)
For systems with strong correlations, non-perturbative approach, such as dynamical mean-field theory (DMFT) (Georges 1996), is usually mandatory. (lu.se)

We find a variety of integrable R-matrices along the boundary of the allowed space both with and without free parameters. (purdue.edu)
We also find a new integrable R-matrix through our numerics, which we later obtained by solving the boundary Yang--Baxter equation. (purdue.edu)

You know, the era of Madonna and Duran Duran, Cheers and The X-Files, McGwire and Sosa, the Macarena, and superstring theory. (columbia.edu)
Superstring theory has also annoyed many physicists by forecasting the existence of a huge "landscape" of different vacuum states, essentially a multiverse comprising multiple universes with a wide range of physical properties (many not suitable for life, but at least one that is). (columbia.edu)
Superstring theory provides a very promising candidate for a theory that could achieve both of these aims simultaneously. (newton.ac.uk)

So far string theory is defined based on the perturbation theory, and because of the lack of the complete definition we cannot find the real ground state, that is, the vacuum. (ens.fr)
The self-energy is traditionally calculated using many-body perturbation theory, such as the well-established Hedin GW approximation (Hedin 1965, 1969) and the fluctuation-exchange (FLEX) approximation (Bickers 1989), in which Feynman diagrams are summed to infinite order. (lu.se)

String theorists suggests that deeper than atoms, deeper than electrons, behind quarks, filaments or strings of vibrating energies animate all the richness and diversity of the cosmos. (onbeing.org)
String theory isn't a field theory (String Field Theory exists, but I don't think it's well understood) but string theorists do have a concept of a vacuum. (physicsoverflow.org)

Sylvester James Gates Jr. is a professor and director of the Center for String and Particle Theory at the University of Maryland, where he's a Regents Professor. (onbeing.org)
About thirty years have passed since the standard model of particle theory is established. (ens.fr)

We begin with a pedagogical introduction to integrable field theories culminating in the description of their finite-volume spectra through the thermodynamic Bethe ansatz. (uu.nl)

Another matrix string theory equivalent to Type IIB string theory was constructed in 1996 by Ishibashi, Kawai, Kitazawa and Tsuchiya. (wikipedia.org)

http://www.newscientist.com/channel/fundamentals/mg19125645.800 sounds like string theory, all particles from vibrations. (physicsforums.com)

D. Gaiotto and E. Witten, "Janus Configurations, Chern-Simons Couplings, and the Theta-Angle in N=4 Super Yang-Mills Theory," 2010. (scirp.org)

It was suggested that light-cone superstring field theory (LCSFT) and matrix string theory (MST) are closely related. (projecteuclid.org)
Quantum field theories arise as low energy effective descriptions in quantum many-body systems. (wisc.edu)
Although strongly coupled quantum field theories are rather common, there is no systematic way of understanding those theories. (wisc.edu)
The idea here seems to be that if you assume you somehow have a fully consistent string field theory, not based on quantum mechanics, then the occurrence in this theory of non-commutative phenomena would "explain" quantum mechanics. (columbia.edu)
On the other hand, the gravitational interaction has a difficulty because the ordinary quantum field theory does not work for it. (ens.fr)
In fact the quantum fluctuations of the gravitational field become too large at short distances to construct a consistent quantum theory. (ens.fr)
The point here is that it is a curious irony of history: first S-matrix theory is overthrown and abandoned in favor of quantum field theory, then later some people start to say that quantum field theory needs to be refined by string theory -- which in turn is an S-matrix theory that contradicts the claim that every sensible S-matrix is that of a field theory. (ncatlab.org)
This phase exhibits universal features already predicted in quantum field theory. (uni-regensburg.de)
This thesis describes the construction of classical superstring field theories based on the small Hilbert space. (uni-muenchen.de)
In particular it allows for an algebraisation of the construction problem for classical superstring field theories in terms of homotopy algebras. (uni-muenchen.de)
It turns out that the solution can be extended to the Neveu-Schwarz subsectors of all superstring field theories. (uni-muenchen.de)
Due to the presence of odd gluing parameters for Ramond states the extension to full superstring field theory is non-trivial. (uni-muenchen.de)
Instead, we construct gauge-invariant equations of motion for all superstring field theories. (uni-muenchen.de)
The S-matrix of a field theory is related to the minimal model of the associated homotopy algebra. (uni-muenchen.de)
The presence of picture changing operators at internal Ramond lines imposes either a constraint on the Hilbert space or necessitates the introduction of an auxiliary string field at picture −3/2. (uni-muenchen.de)
Based on the full equations of motion for the open string field, an action principle is proposed and shown to be gauge-invariant. (uni-muenchen.de)
ST is not a QFT in the sense that the string to be quantized is not a field, it is not defined on all of space time, but the quantization is analogous, is it not? (physicsoverflow.org)
String field theory. (newton.ac.uk)
general backgrounds and non-conformal field theories. (newton.ac.uk)
At the end of the interview, Green ponders the future relationship between string theory and quantum computing, and he describes the field as an intellectual adventure which makes it difficult to predict the significance of these changes. (aip.org)

I remember watching the movies, The Matrix , and so the thought occurred to me, suppose there were physicists in this movie. (onbeing.org)
the main S-matrix theory, string theory, is not properly explained and remains completely enigmatic even to most physicists. (ncatlab.org)
One statement of Maimon that particularly resonated with me is the "…the main S-matrix theory, string theory, is not properly explained and remains completely enigmatic even to most physicists. (ncatlab.org)
He provides sociological perspective in response to the impatience that certain physicists have expressed regarding string theory. (aip.org)

In a theoretical subject like string theory, we can generate datasets, but what sort of data should we generate and study? (cern.ch)

Mathematically, much progress has been made in the asymptotics of differential and difference equations, both linear and nonlinear, and physical applications have highlighted the importance of localization, complex integrable systems, infinite-dimensional Morse theory, saddle-point analysis of path integrals and Picard-Lefschetz theory. (ucsb.edu)

en & Kaya, 2020), but also income distribution (Bar- gain et al. (lu.se)

A link between matroid theory and p -branes is discussed. (projecteuclid.org)
Non-BPS branes and K-theory. (newton.ac.uk)

Since the theory is topological, there are no dynamical phenomena like confinement, instead a close relation exists to the -dimensional conformal theories [ 9 , 14 - 18 ], very much in the spirit of AdS/CFT correspondence [ 19 - 21 ]. (hindawi.com)

Taylor makes an effort to make his review accessible, to cover a broad range of topics, and to describe how matrix theory relates to other models. (stringwiki.org)

our recent construction of maximal (N=16) gauged supergravities in three dimensions has revealed a surprising wealth of structures, which we are currently trying to explore: these theories accommodate all the exceptional groups (in various real forms), with certain supergroups (again including exceptional ones) as background isometries. (mpg.de)

From the model, we derive the BFSS matrix theory and the IIB matrix model in a large N limit by taking appropriate vacua. (scirp.org)
Indeed there's a group studying string vacua. (physicsoverflow.org)

This review by a founder of matrix theory emphasizes discrete light-cone quantization and compactifications. (stringwiki.org)

Based on the author's PhD thesis, this article reviews the application of integrability to the spectral problem of strings on AdS_5 x S^5 and its deformations. (uu.nl)
Through the use of several analytic methods and postcolonial theories, this thesis will analyse representations of language, place, and identity, and argue that they are constructed in the border between Native American and American consciousness. (lu.se)

He explains his decision to return to Cambridge and the importance of the CERN theory group for his research, and he narrates the origins of his collaborations with John Schwarz. (aip.org)

Starting from nothing more than Einstein's general theory of relativity, they have conjured up the universe. (physicsforums.com)

Originally people thought that string theory would give a unique solution to the vacuum-energy equations. (columbia.edu)

The bulk theory can be defined as a minimal string theory whose matter sector is given by timelike Liouville theory instead of a minimal model. (pirsa.org)

However, string theory miraculously avoids this problem. (ens.fr)

The article does try and mount an argument that string theory may not be moribund, with the hope for the future coming from a new paper by Bars and Rychkov entitled Is String Interaction the Origin of Quantum Mechanics? . (columbia.edu)

An important clue has been found in the recent discovery that M-theory, at least in certain backgrounds, has a "holographic" description in terms of a simple non-gravitational gauge theory or matrix theory. (newton.ac.uk)

Spergel describes his subsequent appointment to the faculty at Princeton and the promise of string theory at this time. (aip.org)

We verify that the bound is obeyed in various weakly and strongly interacting theories. (stanford.edu)

Anatomy18

Organisms5

Diseases3

Chemicals and Drugs75

Analytical, Diagnostic and Therapeutic Techniques and Equipment42

Psychiatry and Psychology17

Phenomena and Processes53

Disciplines and Occupations10

Technology, Industry, Agriculture5

Humanities6

Information Science39

Health Care7

Geographicals1

Supergravity7

Physics22

Conformal field2

Supersymmetric6

Cosmology1

Supersymmetry2

Gravity10

Algebraic2

Torus2

Density5

Bootstrap1

Mathematical2

Bosonic2

Formalism1

Formulation4

Perturbative4

Boundary2

Superstring Theory3

Perturbation theory2

Theorists2

Particle Theory2

Pedagogical Introduction1

Kawai1

Particles1

Yang-Mills1

Field20

Physicists4

Theoretical1

Integrable systems1

20201

Branes2

Topological1

Describe1

Isometries1

Vacua2

Light Cone1

Thesis2

CERN1

Einstein's1

Equations1

Minimal1

Avoids1

Interaction1

Holographic1

Princeton1

Strongly1