scholarly journals MAGNETIC BACKGROUNDS AND NONCOMMUTATIVE FIELD THEORY

2004 ◽  
Vol 19 (12) ◽  
pp. 1837-1861 ◽  
Author(s):  
RICHARD J. SZABO
Keyword(s):  
Field Theory ◽  
String Theory ◽  
Particle Physics ◽  
Condensed Matter ◽  
Field Theories ◽  
Noncommutative Field Theory

This paper is a rudimentary introduction, geared at nonspecialists, to how noncommutative field theories arise in physics and their applications to string theory, particle physics and condensed matter systems.

scholarly journals Emergent fields from hidden sectors

2021 ◽  
Vol 2105 (1) ◽  
pp. 012002
Author(s):  
Pascal Anastasopoulos
Keyword(s):  
String Theory ◽  
Particle Physics ◽  
Field Theories ◽  
Gauge Fields ◽  
Quantum Field Theories ◽  
Quantum Field

Abstract The present research proceeding aims at investigating/exploring/sharpening the phenomenological consequences of string theory and holography in particle physics and cosmology. We rely on and elaborate on the recently proposed framework whereby four-dimensional quantum field theories describe all interactions in Nature, and gravity is an emergent and not a fundamental force. New gauge fields, axions, and fermions, which can play the role of right-handed neutrinos, can also emerge in this framework. Preprint: UWThPh 2021-8

scholarly journals Dark solitons, D-branes and noncommutative tachyon field theory

2017 ◽  
Vol 32 (33) ◽  
pp. 1750201 ◽  
Author(s):  
Stefano Giaccari ◽  
Jun Nian
Keyword(s):  
Field Theory ◽  
String Theory ◽  
Soliton Solutions ◽  
Field Theories ◽  
Tachyon Field ◽  
Dark Solitons ◽  
Quantitative Level ◽  
Two Systems ◽  
Duality Map ◽  
Effective String Theory

In this paper we discuss the boson/vortex duality by mapping the (3[Formula: see text]+[Formula: see text]1)D Gross–Pitaevskii theory into an effective string theory in the presence of boundaries. Via the effective string theory, we find the Seiberg–Witten map between the commutative and the noncommutative tachyon field theories, and consequently identify their soliton solutions with D-branes in the effective string theory. We perform various checks of the duality map and the identification of soliton solutions. This new insight between the Gross–Pitaevskii theory and the effective string theory explains the similarity of these two systems at quantitative level.

TWISTED SYMMETRY AND NONCOMMUTATIVE FIELD THEORY

2012 ◽  
Vol 13 ◽  
pp. 54-65
Author(s):  
MARIJA DIMITRIJEVIĆ ◽  
LARISA JONKE
Keyword(s):  
Field Theory ◽  
Effective Action ◽  
Degrees Of Freedom ◽  
Deformation Parameter ◽  
Field Theories ◽  
Gauge Field Theory ◽  
Noncommutative Field Theory ◽  
First Order ◽  
Minkowski Space Time ◽  
Noncommutative Spaces

Although the meaning of twisted symmetry is still not fully understood, the twist approach has its advantages in the construction of field theories on noncommutative spaces. We discuss these advantages on the example of κ-Minkowski space-time. We construct the noncommutative U(1) gauge field theory. Especially the action is written as an integral of a maximal form, thus solving the cyclicity problem of the integral in κ-Minkowski. Using the Seiberg-Witten map to relate noncommutative and commutative degrees of freedom the effective action with the first order corrections in the deformation parameter is obtained.

scholarly journals NONCOMMUTATIVITY FROM THE SYMPLECTIC POINT OF VIEW

2006 ◽  
Vol 21 (26) ◽  
pp. 5359-5369 ◽  
Author(s):  
E. M. C. ABREU ◽  
C. NEVES ◽  
W. OLIVEIRA
Keyword(s):  
Magnetic Field ◽  
Field Theory ◽  
String Theory ◽  
Point Of View ◽  
Field Theories ◽  
Lagrangian Description ◽  
Moyal Product ◽  
Commutative Field ◽  
Background Magnetic Field

The great deal in noncommutative (NC) field theories started when it was noted that NC spaces naturally arise in string theory with a constant background magnetic field in the presence of D-branes. In this work we explore how NC geometry can be introduced into a commutative field theory besides the usual introduction of the Moyal product. We propose a nonperturbative systematic new way to introduce NC geometry into commutative systems, based mainly on the symplectic approach. Further, as example, this formalism describes precisely how to obtain a Lagrangian description for the NC version of some systems reproducing well-known theories.

scholarly journals On the development of effective field theory

2021 ◽  
Author(s):  
Steven Weinberg
Keyword(s):  
Field Theory ◽  
Effective Field Theory ◽  
Particle Physics ◽  
Effective Field ◽  
Early History ◽  
First Century ◽  
Field Theories ◽  
Theory Approach ◽  
Seminar Series ◽  
History Of

AbstractEditor’s note: One of the most important developments in theoretical particle physics at the end of the 20th century and beginning of the twenty-first century has been the development of effective field theories (EFTs). Pursuing an effective field theory approach is a methodology for constructing theories, where a set of core principles is agreed upon, such as Lorentz symmetry and unitarity, and all possible interactions consistent with them are then compulsory in the theory. The utility of this approach to particle physics (and beyond) is wide ranging and undisputed, as evidenced by the recent formation of the international seminar series All Things EFT (Talks in the series can be viewed at https://www.youtube.com/channel/UC1_KF6kdJFoDEcLgpcegwCQ (accessed 21 December 2020).) which brings together each week the worldwide community of EFT practitioners. The text below is a lightly edited version of the talk given by Prof. Weinberg on September 30, 2020, which inaugurated the series. The talk reviews some of the early history of EFTs from the perspective of its pioneer and concludes with a discussion of EFT implications for future discovery.

scholarly journals Editorial to the Special Issue “The Casimir Effect: From a Laboratory Table to the Universe”

Universe ◽  
2021 ◽  
Vol 7 (8) ◽  
pp. 266
Author(s):  
Galina L. Klimchitskaya
Keyword(s):  
Elementary Particle ◽  
Field Theory ◽  
Particle Physics ◽  
Casimir Effect ◽  
Condensed Matter ◽  
Quantum Field ◽  
Special Issue ◽  
Elementary Particle Physics ◽  
Comprehensive Picture ◽  
The Universe

This Special Issue presents a comprehensive picture of the Casimir effect as a multidisciplinary subject that plays an important role in diversified areas of physics ranging from quantum field theory, atomic physics and condensed matter physics to elementary particle physics, gravitation and cosmology [...]

scholarly journals Beauty and physics: 13 important contributions of Chen Ning Yang

2014 ◽  
Vol 29 (17) ◽  
pp. 1475001 ◽  
Author(s):  
Yu Shi
Keyword(s):  
Field Theory ◽  
Statistical Mechanics ◽  
Particle Physics ◽  
Condensed Matter ◽  
Condensed Matter Physics ◽  
90Th Birthday ◽  
Chen Ning Yang

In 2012, Chen Ning Yang received a 90th birthday gift in the form of a black cube inscribed with his 13 most important contributions, which cover four major areas of physics: statistical mechanics, condensed matter physics, particle physics and field theory. We briefly describe these 13 contributions and make general comments about Yang's distinctive style as a trailblazing leader in research.

scholarly journals Introduction. Cosmology meets condensed matter

2008 ◽  
Vol 366 (1877) ◽  
pp. 2793-2802 ◽  
Author(s):  
T.W.B Kibble ◽  
G.R Pickett
Keyword(s):  
Field Theory ◽  
Low Temperature ◽  
Particle Physics ◽  
Royal Society ◽  
Condensed Matter ◽  
Topological Defects ◽  
European Science Foundation ◽  
European Science ◽  
The Subject ◽  
Early Universe Cosmology

At first sight, low-temperature condensed-matter physics and early Universe cosmology seem worlds apart. Yet, in the last few years a remarkable synergy has developed between the two. It has emerged that, in terms of their mathematical description, there are surprisingly close parallels between them. This interplay has been the subject of a very successful European Science Foundation (ESF) programme entitled COSLAB (‘Cosmology in the Laboratory’) that ran from 2001 to 2006, itself built on an earlier ESF network called TOPDEF (‘Topological Defects: Non-equilibrium Field Theory in Particle Physics, Condensed Matter and Cosmology’). The articles presented in this issue of Philosophical Transactions A are based on talks given at the Royal Society Discussion Meeting ‘Cosmology meets condensed matter’, held on 28 and 29 January 2008. Many of the speakers had participated earlier in the COSLAB programme, but the strength of the field is illustrated by the presence also of quite a few new participants.

scholarly journals Scientific biography of Stanley Mandelstam: 1955–1980

2017 ◽  
Vol 32 (12) ◽  
pp. 1740010 ◽  
Author(s):  
Charles B. Thorn
Keyword(s):  
Field Theory ◽  
Quantum Field Theory ◽  
String Theory ◽  
Recent Work ◽  
Particle Physics ◽  
Quantum Field ◽  
Scientific Biography

I review Stanley Mandelstam’s many contributions to particle physics, quantum field theory and string theory covering the years 1955 through 1980. His more recent work will be reviewed by Nathan Berkovits.

scholarly journals Noncommutative field theory from string theory: two-loop analysis

2001 ◽  
Vol 594 (1-2) ◽  
pp. 169-189 ◽  
Author(s):  
Youngjai Kiem ◽  
Sangmin Lee ◽  
Jaemo Park
Keyword(s):  
Field Theory ◽  
String Theory ◽  
Noncommutative Field Theory ◽  
Loop Analysis
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