Results 31 to 40 of about 357,046 (309)
Real-time correlation function of Floquet conformal fields [PDF]
, 2020 Conformal field theories (CFT) play an important role in quantum field theories as they allow for exact studies that are hard to access without the conformal symmetries in place.
M. Andersen +2 more
semanticscholar +1 more source
Extracting the Field Theory Description of a Quantum Many-Body System from Experimental Data
Physical Review X, 2020 Quantum field theory is a powerful tool to describe the relevant physics governing complex quantum many-body systems. Here, we develop a general pathway to extract the irreducible building blocks of quantum field theoretical descriptions and its ...
Torsten V. Zache +4 more
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On the S-matrix of Liouville theory
Journal of High Energy Physics, 2021 The S-matrix for each chiral sector of Liouville theory on a cylinder is computed from the loop expansion of correlation functions of a one-dimensional field theory on a circle with a non-local kinetic energy and an exponential potential.
George Jorjadze, Stefan Theisen
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On the Feynman-Hellmann theorem in quantum field theory and the calculation of matrix elements [PDF]
, 2016 Author(s): Bouchard, C; Chang, CC; Kurth, T; Orginos, K; Walker-Loud, A | Abstract: © 2017 American Physical Society. The Feynman-Hellmann theorem can be derived from the long Euclidean-time limit of correlation functions determined with functional ...
C. Bouchard +4 more
semanticscholar +1 more source
Journal of High Energy Physics, 2021 We identify a nontrivial yet tractable quantum field theory model with space/time anisotropic scale invariance, for which one can exactly compute certain four-point correlation functions and their decompositions via the operator-product expansion(OPE ...
Hidehiko Shimada, Hirohiko Shimada
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Nonassociative Snyder ϕ 4 quantum field theory [PDF]
, 2017 In this article, we define and quantize a truncated form of the nonassociative and noncommutative Snyder ϕ^4 field theory using the functional method in momentum space. More precisely, the action is approximated by expanding up to the linear order in the
S. Meljanac +3 more
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Channeling Quantum Criticality. [PDF]
Physical Review Letters, 2023 We analyze the effect of decoherence, modeled by local quantum channels, on quantum critical states and we find universal properties of the resulting mixed state's entanglement, both between system and environment and within the system.
Yijian Zou, Shengqi Sang, T. Hsieh
semanticscholar +1 more source
Lepton asymmetry rate from quantum field theory: NLO in the hierarchical limit [PDF]
, 2017 The rates for generating a matter-antimatter asymmetry in extensions of the Standard Model (SM) containing right-handed neutrinos are the most interesting and least trivial co\-efficients in the rate equations for baryogenesis through thermal ...
D. Bodeker, M. Sangel
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Quantum trajectory theory and simulations of nonlinear spectra and multiphoton effects in waveguide-QED systems with a time-delayed coherent feedback [PDF]
Physical Review A, 2021 We study the nonlinear spectra and multi-photon correlation functions for the waveguide output of a two-level system (including realistic dissipation channels) with a time-delayed coherent feedback.
G. Crowder, L. Ramunno, S. Hughes
semanticscholar +1 more source
European Physical Journal C: Particles and Fields, 2020 In this work, we study the impact of quantum entanglement on the two-point correlation function and the associated primordial power spectrum of mean square vacuum fluctuation in a bipartite quantum field theoretic system.
Sayantan Choudhury, Sudhakar Panda
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