Results 1 to 10 of about 7,892 (272)
Physics Letters B, 2018 Motivated by the gauge theory of gravity with local scaling symmetry proposed recently in [1,2], we investigate whether the scalar field therein can be responsible for the inflation. We show that the classical theory would suffer from the difficulty that
Yong Tang, Yue-Liang Wu
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Additions to v22: ·Section 7.8 Quantum Chemistry ·Section 7.8.1 The Exact Solution of the Many-Body Schr"odinger Equation ·Section 7.8.2 Strong Electron Correlation: When Single-Reference Methods Fail ·Section 7.8.3 The Basis Set Incompleteness and Convergence Nightmare ·Section 7.9 Unsolved Problems in Physics Resolved by FCMT ·Section 7.9.1 ...
Hosack, Zachary, Grok, xAI
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Theory of dynamical phase transitions in quantum systems with symmetry-breaking eigenstates [PDF]
Physical Review Letters, 2022 4+ pages, 4 figures.
Ángel L. Corps, A. Relaño
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The classical limit and spontaneous symmetry breaking in algebraic quantum theory [PDF]
Expositiones Mathematicae, 2022 In this paper an overview of some recent developments on the classical limit and spontaneous symmetry breaking (SSB) in algebraic quantum theory is given. In such works, based on the theory of $C^*$-algebras, the concept of the classical limit has been formalized in a complete algebraic manner. Additionally, since this setting allows for commutative as
Christiaan J. F. van de Ven
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Tunneling in quantum field theory with spontaneous symmetry breaking [PDF]
Physics Letters B, 1995 8 pages, latex, 2 figures appended (uuencoded postscript); complete postscript file is available at ftp://dept.physics.upenn.edu/pub/Kusenko/UPR671T ...
Alexander Kusenko
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Nonperturbative calculation of symmetry breaking in quantum field theory [PDF]
Physical Review D, 1996 A new version of the delta expansion is presented, which, unlike the conventional delta expansion, can be used to do nonperturbative calculations in a self-interacting scalar quantum field theory having broken symmetry. We calculate the expectation value of the scalar field to first order in delta, where delta is a measure of the degree of nonlinearity
Carl M. Bender, Kimball A. Milton
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T and C Symmetry Breaking in Algebraic Quantum Field Theory [PDF]
The 1st Electronic Conference on Universe, 2021 We have developed a quantum field theory of spinors based on the algebra of canonical anticommutation relations (CAR algebra). The proposed approach is based on the use of Grassmann densities in the momentum space and their derivatives with respect to the construction from these densities of both basis Clifford vectors of spacetime and the spinor ...
В. В. Монахов
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Wigner localization in quantum dots from Kohn-Sham density functional theory without symmetry breaking [PDF]
Physical Review B, 2014 We address low-density two-dimensional circular quantum dots with spin-restricted Kohn-Sham density functional theory. By using an exchange-correlation functional that encodes the effects of the strongly-correlated regime (and that becomes exact in the limit of infinite correlation), we are able to reproduce characteristic phenomena such as the ...
Christian B. Mendl +2 more
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Spontaneous symmetry breaking in twisted noncommutative quantum theories [PDF]
Physical Review D, 2009 We analyse aspects of symmetry breaking for Moyal spacetimes within a quantisation scheme which preserves the twisted Poincar symmetry. Towards this purpose, we develop the LSZ approach for Moyal spacetimes. The latter gives a formula for scattering amplitudes on these spacetimes which can be obtained from the corresponding ones on the commutative ...
A. P. Balachandran +2 more
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Algebraic Approach to Bose–Einstein Condensation in Relativistic Quantum Field Theory: Spontaneous Symmetry Breaking and the Goldstone Theorem [PDF]
Annales Henri Poincaré, 2020 AbstractWe construct states describing Bose–Einstein condensates at finite temperature for a relativistic massive complex scalar field with $$|\varphi |^4$$ | φ | 4 ...
Romeo Brunetti +2 more
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