Results 1 to 10 of about 3,107,450 (374)

Emergence of string-like physics from Lorentz invariance in loop quantum gravity [PDF]

open access: yes, 2014
We consider a quantum field theory on a spherically symmetric quantum space time described by loop quantum gravity. The spin network description of space time in such a theory leads to equations for the quantum field that are discrete.
Gambini, Rodolfo, Pullin, Jorge
core   +3 more sources

T T ¯ $$ T\overline{T} $$ -deformation and long range spin chains

open access: yesJournal of High Energy Physics, 2020
We point out that two classes of deformations of integrable models, developed completely independently, have deep connections and share the same algebraic origin. One class includes the T T ¯ $$ T\overline{T} $$ -deformation of 1+1 dimensional integrable
Balázs Pozsgay   +2 more
doaj   +1 more source

K-theory in quantum field theory [PDF]

open access: yesCurrent Developments in Mathematics, 2001
We survey three different ways in which K-theory in all its forms enters quantum field theory. In Part 1 we give a general argument which relates topological field theory in codimension two with twisted K-theory, and we illustrate with some finite models.
openaire   +3 more sources

Quantum Spacetime and Algebraic Quantum Field Theory

open access: yes, 2015
We review the investigations on the quantum structure of spactime, to be found at the Planck scale if one takes into account the operational limitations to localization of events which result from the concurrence of Quantum Mechanics and General ...
Bahns, Dorothea   +3 more
core   +1 more source

Quantum Thermodynamics at Strong Coupling: Operator Thermodynamic Functions and Relations

open access: yesEntropy, 2018
Identifying or constructing a fine-grained microscopic theory that will emerge under specific conditions to a known macroscopic theory is always a formidable challenge.
Jen-Tsung Hsiang, Bei-Lok Hu
doaj   +1 more source

Electron-nuclear decoupling at a spin clock transition

open access: yesCommunications Physics, 2023
Magnetic molecules have chemically tunable electronic states that could be used for quantum technologies, but they are often surrounded by a nuclear spin bath causing decoherence. In this study, the authors experimentally investigate the electron-nuclear
Krishnendu Kundu   +10 more
doaj   +1 more source

Numbers and functions in quantum field theory [PDF]

open access: yes, 2016
We review recent results in the theory of numbers and single-valued functions on the complex plane which arise in quantum field theory. We use the results to calculate the renormalization functions $\beta$, $\gamma$, $\gamma_m$ of dimensionally ...
O. Schnetz
semanticscholar   +1 more source

A spin-statistics theorem for quantum fields on curved spacetime manifolds in a generally covariant framework [PDF]

open access: yes, 2001
A model-independent, locally generally covariant formulation of quantum field theory over four-dimensional, globally hyperbolic spacetimes will be given which generalizes similar, previous approaches.
Verch, Rainer
core   +1 more source

Spin in Quantum Field Theory [PDF]

open access: yes, 2007
I introduce spin in field theory by emphasizing the close connection between quantum field theory and quantum mechanics. First, I show that the spin-statistics connection can be derived in quantum mechanics without relativity or field theory. Then, I discuss path integrals for spin without using spinors.
openaire   +3 more sources

Finslerian quantum field theory [PDF]

open access: yesNonlinear Analysis: Theory, Methods & Applications, 2005
Invited plenary lecture at the Fourth World Congress of Nonlinear Analysts in the session: Applications of Finsler Differential Geometry (in Engineering, Physics and Biology), July 5, 2004, Orlando ...
openaire   +3 more sources

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