Results 11 to 20 of about 64,609 (182)
Quantum field theoretical structure of electrical conductivity of cold and dense fermionic matter in the presence of a magnetic field [PDF]
Physical Review D, 2021 We have gone through a detailed calculation of the two-point correlation function of vector currents at finite density and magnetic field by employing the real time formalism of finite temperature field theory and Schwinger's proper time formalism.
Sarthak Satapathy +2 more
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Quantum-critical properties of the long-range transverse-field Ising model from quantum Monte Carlo simulations [PDF]
Physical review B, 2021 The quantum-critical properties of the transverse-field Ising model with algebraically decaying interactions are investigated by means of stochastic series expansion quantum Monte Carlo, on both the one-dimensional linear chain and the two-dimensional ...
J. Koziol +3 more
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String Theory Explanation of Large-Scale Anisotropy and Anomalous Alignment [PDF]
Reports in Advances of Physical Sciences, 2018 The discovery of anomalies in the cosmic microwave background (CMB) indicates large-scale anisotropies, non-Gaussian distributions, and anomalous alignments of the quadrupole and octupole modes of the anisotropy with each other and with both the ecliptic
Zhi Gang Sha, Rulin Xiu
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The quantum sine-Gordon model with quantum circuits
Nuclear Physics B, 2021 Analog quantum simulation has the potential to be an indispensable technique in the investigation of complex quantum systems. In this work, we numerically investigate a one-dimensional, faithful, analog, quantum electronic circuit simulator built out of ...
Ananda Roy +4 more
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NON RELATIVISTIC QUANTUM FIELD THEORY: DYNAMICS AND IRREVERSIBILITY
Anales (Asociación Física Argentina), 2022 We study aspects of quantum field theory at finite density using techniques and concepts from quantum information theory. We focus on massive Dirac fermions with chemical potential in 1+1 space-time dimensions.
L. Daguerre +3 more
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Equilibrium States in Thermal Field Theory and in Algebraic Quantum Field Theory [PDF]
Annales de l'Institute Henri Poincare. Physique theorique, 2019 We compare the construction of equilibrium states at finite temperature for self-interacting massive scalar quantum field theories on Minkowski spacetime proposed by Fredenhagen and Lindner (Commun Math Phys 332:895, 2014) with results obtained in ...
João Braga de Góes Vasconcellos +2 more
semanticscholar +1 more source
Unfolded dynamics approach and quantum field theory
Journal of High Energy Physics, 2023 We study quantization of a self-interacting scalar field within the unfolded dynamics approach. To this end we find and analyze a classical unfolded system describing 4d off-shell scalar field with a general self-interaction potential.
Nikita Misuna
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Non-Archimedean Statistical Field Theory [PDF]
, 2020 We construct in a rigorous mathematical way interacting quantum field theories on a p-adic spacetime. The main result is the construction of a measure on a function space which allows a rigorous definition of the partition function.
W. A. Z'uniga-Galindo
semanticscholar +1 more source
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
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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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