Results 11 to 20 of about 73,526 (268)

QUANTUM FIELD THEORIES [PDF]

open access: yesInternational Journal of Modern Physics A, 2005
The scope of this review is to give a pedagogical introduction to some new calculations and methods developed by the author in the context of quantum groups and their applications. The review is self-contained and serves as a "first aid kit" before one ventures into the beautiful but bewildering landscape of Woronowicz's theory.
openaire   +1 more source

A note on unfree gauge symmetry

open access: yesNuclear Physics B, 2019
We study the general structure of field theories with the unfree gauge symmetry where the gauge parameters are restricted by differential equations.
D.S. Kaparulin, S.L. Lyakhovich
doaj   +1 more source

Extend the Levin-Wen model to two-dimensional topological orders with gapped boundary junctions

open access: yesJournal of High Energy Physics, 2022
A realistic material may possess defects, which often bring the material new properties that have practical applications. The boundary defects of a two-dimensional topologically ordered system are thought of as an alternative way of realizing topological
Hongyu Wang, Yuting Hu, Yidun Wan
doaj   +1 more source

Enhancing thermoelectric performance of n-type AgBi3S5 through synergistically optimizing the effective mass and carrier mobility

open access: yesJournal of Materiomics, 2023
AgBi3S5 is a new n-type thermoelectric material that is environmentally friendly and composed of elements of earth-abundant, non-toxic and high performance-cost ratio.
Xin Qian   +7 more
doaj   +1 more source

Quasirenormalizable Quantum Field Theories [PDF]

open access: yesTheoretical and Mathematical Physics, 2019
21 pages, 2 ...
Polyakov, M. V.   +3 more
openaire   +3 more sources

On Quantum Field Theory. I: Quantum Field Theory as Quantum Mechanics [PDF]

open access: yesProgress of Theoretical Physics, 1974
Summary: A new approach to finding a steady foundation of quantum field theory is investigated with the help of the so-called nonstandard mathematics. We construct a model of the quantum field theory as a quantum-mechanical system with very many degrees of freedom.
openaire   +1 more source

Calculation of the Acoustic Spectrum of a Cylindrical Vortex in Viscous Heat-Conducting Gas Based on the Navier–Stokes Equations

open access: yesComputation, 2016
An extremely interesting problem in aero-hydrodynamics is the sound radiation of a single vortical structure. Currently, this type of problem is mainly considered for an incompressible medium. In this paper a method was developed to take into account the
Tatiana Petrova, Fedor Shugaev
doaj   +1 more source

Quantum Field Theory

open access: yesUniverse, 2023
This Special Issue on quantum field theory presents work covering a wide and topical range of subjects mainly within the area of interacting 4D quantum field theories subject to certain backgrounds [...]
Ralf Hofmann
doaj   +1 more source

QUATERNIONIC QUANTUM FIELD THEORY [PDF]

open access: yesPhysical Review Letters, 1985
Abstract Up to this point our discussion of relativistic quaternionic wave equations has dealt with the first quantized case, in which the wave fields are quaternions in the right-acting algebra spanned by 1, i,j,k, with c-number-valued real components.
openaire   +3 more sources

PERTURBATIVE QUANTUM FIELD THEORY [PDF]

open access: yesChallenges for the 21st Century, 2001
This talk introduces perturbative quantum field on a heuristic level. It is directed at an audience familiar with elements of quantum mechanics, but not necessarily with high energy physics. It includes a discussion of the strategies behind experimental tests of fundamental theories, and of the field theory interpretations of these tests.
openaire   +3 more sources

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