Results 11 to 20 of about 876,408 (341)
From euclidean field theory to quantum field theory [PDF]
Reviews in Mathematical Physics, 1997 In order to construct examples for interacting quantum field theory models, the methods of euclidean field theory turned out to be powerful tools since they make use of the techniques of classical statistical mechanics. Starting from an appropriate set
Dirk Schlingemann, Universität Hamburg
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Relative quantum field theory [PDF]
Communications in Mathematical Physics, 2014 We highlight the general notion of a relative quantum field theory, which occurs in several contexts. One is in gauge theory based on a compact Lie algebra, rather than a compact Lie group.
Freed, Daniel S., Teleman, Constantin
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Braided Quantum Field Theory [PDF]
Communications in Mathematical Physics, 1999 We develop a general framework for quantum field theory on noncommutative spaces, i.e., spaces with quantum group symmetry. We use the path integral approach to obtain expressions for $n$-point functions.
Oeckl, Robert
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Constructive Quantum Field Theory
, 2005 A review of the renormalization group approach to the proof of non perturbative ultraviolet stability in scalar field theories in dimension d=2,3.Comment: Plain ...
Aizenman +25 more
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Quantum scars in quantum field theory
Physical Review D, 2023 We develop the theory of quantum scars for quantum fields. By generalizing the formalisms of Heller and Bogomolny from few-body quantum mechanics to quantum fields, we find that unstable periodic classical solutions of the field equations imprint themselves in a precise manner on bands of energy eigenfunctions.
Jordan Cotler, Annie Y. Wei
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QUANTUM FIELD THEORY IN GRAPHENE [PDF]
International Journal of Modern Physics: Conference Series, 2012 This is a short non-technical introduction to applications of the Quantum Field Theory methods to graphene. We derive the Dirac model from the tight binding model and describe calculations of the polarization operator (conductivity). Later on, we use this quantity to describe the Quantum Hall Effect, light absorption by graphene, the Faraday effect ...
Fialkovsky, I. V., Vassilevich, D. V.
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Quantum Algorithms for Quantum Field Theories [PDF]
Science, 2012 Quantum Leap? Quantum computers are expected to be able to solve some of the most difficult problems in mathematics and physics. It is not known, however, whether quantum field theories (QFTs) can be simulated efficiently with a quantum computer.
Jordan, Stephen P. +2 more
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International 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.
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A note on unfree gauge symmetry
Nuclear 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
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Locally covariant quantum field theory with external sources [PDF]
, 2014 We provide a detailed analysis of the classical and quantized theory of a multiplet of inhomogeneous Klein-Gordon fields, which couple to the spacetime metric and also to an external source term; thus the solutions form an affine space.
Fewster, Christopher J. +1 more
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