scholarly journals Strings and branes are waves

2014 ◽  
Vol 2014 (6) ◽  
Author(s):  
Joel Berkeley ◽  
David S. Berman ◽  
Felix J. Rudolph
Keyword(s):  
Strings And Branes

scholarly journals A brief review of E theory

2016 ◽  
Vol 31 (26) ◽  
pp. 1630043 ◽  
Author(s):  
Peter West
Keyword(s):  
Infinite Number ◽  
Equations Of Motion ◽  
Space Time ◽  
Unified Theory ◽  
Dynamical Equations ◽  
Supergravity Theory ◽  
Maximal Supergravity ◽  
Abdus Salam ◽  
Strings And Branes ◽  
Time Lead

I begin with some memories of Abdus Salam who was my PhD supervisor. After reviewing the theory of nonlinear realisations and Kac–Moody algebras, I explain how to construct the nonlinear realisation based on the Kac–Moody algebra [Formula: see text] and its vector representation. I explain how this field theory leads to dynamical equations which contain an infinite number of fields defined on a space–time with an infinite number of coordinates. I then show that these unique dynamical equations, when truncated to low level fields and the usual coordinates of space–time, lead to precisely the equations of motion of 11-dimensional supergravity theory. By taking different group decompositions of [Formula: see text] we find all the maximal supergravity theories, including the gauged maximal supergravities, and as a result the nonlinear realisation should be thought of as a unified theory that is the low energy effective action for type II strings and branes. These results essentially confirm the [Formula: see text] conjecture given many years ago.

scholarly journals A symmetry principle for emergent spacetime

2020 ◽  
Vol 29 (14) ◽  
pp. 2043014
Author(s):  
Edgar Shaghoulian
Keyword(s):  
Quantum Mechanics ◽  
Order Parameter ◽  
Gravitational Theory ◽  
Symmetry Principle ◽  
Strings And Branes ◽  
Emergent Spacetime ◽  
Gauge Gravity ◽  
Gravity Duality

There are many examples where geometry and gravity are concepts that emerge from a theory of quantum mechanics without gravity. This suggests thinking of gravity as an exotic phase of matter. Quantifying this phase in the Landau paradigm requires some sort of symmetry principle or order parameter that captures its appearance. In this essay, we propose higher-form symmetries as a symmetry principle underlying emergent spacetime. We explore higher-form symmetries in gauge–gravity duality and explain how their breaking describes features of gravitational theory. Such symmetries imply the existence of nonlocal objects in the gravitational theory — in gauge–gravity duality these are the strings and branes of the bulk theory — giving an alternative way to understand the nonlocality necessary in any ultraviolet completion of gravity.

scholarly journals Path and path deviation equations for p-branes

Open Physics ◽  
2012 ◽  
Vol 10 (2) ◽  
Author(s):  
Matej Pavšič ◽  
Magd Kahil
Keyword(s):  
Point Particles ◽  
Test Particles ◽  
Strings And Branes ◽  
Charged Test ◽  
Charged Point ◽  
Path Deviation ◽  
Kaluza Klein

AbstractPath and path deviation equations for neutral, charged, spinning and spinning charged test particles, using a modified Bazanski Lagrangian, are derived. We extend this approach to strings and branes. We show how the Bazanski Lagrangian for charged point particles and charged branes arises à la Kaluza-Klein from the Bazanski Lagrangian in 5-dimensions.

scholarly journals STRINGS AND BRANES IN NON-ABELIAN GAUGE THEORY

2000 ◽  
Vol 15 (31) ◽  
pp. 4883-4902
Author(s):  
CHRISTOF SCHMIDHUBER
Keyword(s):  
Gauge Theory ◽  
String Theory ◽  
Abelian Gauge ◽  
Abelian Gauge Theory ◽  
Conformally Invariant ◽  
Strings And Branes ◽  
String Representation

It is an old speculation that SU(N) gauge theory can alternatively be formulated as a string theory. Recently this subject has been revived, in the wake of the discovery of D-branes. In particular, it has been argued that at least some conformally invariant cousins of the theory have such a string representation. This is a pedagogical introduction to these developments for nonstring theorists. Some of the existing arguments are simplified.

A RUNAWAY DIRECTION IN BRANE-GAS MODULI SPACE

2005 ◽  
Vol 20 (27) ◽  
pp. 6211-6219
Author(s):  
A. BERNDSEN
Keyword(s):  
General Relativity ◽  
Moduli Space ◽  
Effective Potential ◽  
Extra Dimensions ◽  
Late Time ◽  
Dilaton Gravity ◽  
Standard Cosmology ◽  
Strings And Branes ◽  
M Theory ◽  
Shape And Size

Brane Gas Cosmology (BGC) is an M-theory motivated attempt to reconcile aspects of standard cosmology based on Einstein's theory of general relativity. The background in this framework is described by dilaton gravity, which introduces various moduli fields for the shape and size of the extra dimensions and the dilaton. Following previous successes in this field, we dimensionally reduce a gas of strings and branes to the d + 1-dimensional Einstein frame with the hopes of understanding late-time BGC. This procedure generates an effective potential for the moduli fields, which we analyze in the hopes of stabilizing all fields; however, with the inclusion of strings and branes alone we find one direction remains free to roll away.

scholarly journals Strings and branes with a modified measure

2000 ◽  
Vol 17 (18) ◽  
pp. 3673-3680 ◽  
Author(s):  
E I Guendelman
Keyword(s):  
Strings And Branes
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