Results 31 to 40 of about 78,966 (218)
From quantum field theory to quantum mechanics
European Physical Journal C: Particles and Fields, 2021 The purpose of this article is to construct an explicit relation between the field operators in Quantum Field Theory and the relevant operators in Quantum Mechanics for a system of N identical particles, which are the symmetrised functions of the ...
Nuno Barros e Sá, Cláudio Gomes
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QUANTUM GROUPS AND FIELD THEORY [PDF]
Modern Physics Letters A, 2000 When the symmetry of a physical theory describing a finite system is deformed by replacing its Lie group by the corresponding quantum group, the operators and state function will lie in a new algebra describing new degrees of freedom. If the symmetry of a field theory is deformed in this way, the enlarged state space will again describe additional ...
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Critical 1- and 2-point spin correlations for the O(2) model in 3d bounded domains
Journal of High Energy Physics, 2021 We study the critical properties of the 3d O(2) universality class in bounded domains through Monte Carlo simulations of the clock model. We use an improved version of the latter, chosen to minimize finite-size corrections at criticality, with 8 ...
Alessandro Galvani +2 more
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Quantum theory of noncommutative fields [PDF]
Journal of High Energy Physics, 2003 Generalizing the noncommutative harmonic oscillator construction, we propose a new extension of quantum field theory based on the concept of "noncommutative fields". Our description permits to break the usual particle-antiparticle degeneracy at the dispersion relation level and introduces naturally an ultraviolet and an infrared cutoff ...
J. M. Carmona +3 more
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Hyperfunction quantum field theory [PDF]
Communications in Mathematical Physics, 1976 The quantum field theory in terms of Fourier hyperfunctions is constructed. The test function space for hyperfunctions does not containC∞ functions with compact support. In spite of this defect the support concept ofH-valued Fourier hyperfunctions allows to formulate the locality axiom for hyperfunction quantum field theory.
Nagamachi, S., Mugibayashi, N.
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Constructive Quantum Field Theory [PDF]
, 2006 A review of the renormalization group approach to the proof of non perturbative ultraviolet stability in scalar field theories in dimension d=2,3.
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A Quantum field theory of dyons [PDF]
Proceedings of Quantum aspects of gauge theories, supersymmetry and unification — PoS(tmr99), 2000 We construct a classical field theory action which upon quantization via the functional integral approach, gives rise to a consistent Dirac-string independent quantum field theory. The approach entails a systematic derivation of the correlators of all gauge invariant observables, and also of charged dyonic fields.
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Towards Quantum Field Theory in Categorical Quantum Mechanics [PDF]
Electronic Proceedings in Theoretical Computer Science, 2018 In this work, we use tools from non-standard analysis to introduce infinite-dimensional quantum systems and quantum fields within the framework of Categorical Quantum Mechanics.
Stefano Gogioso, Fabrizio Genovese
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Confinement in the tricritical Ising model
Physics Letters B, 2022 We study the leading and sub-leading magnetic perturbations of the thermal E7 integrable deformation of the tricritical Ising model. In the low-temperature phase, these magnetic perturbations lead to the confinement of the kinks of the model.
M. Lencsés, G. Mussardo, G. Takács
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