Quantum interactions between nonperturbative vacuum fields

Journal Article · Thu Apr 01 00:00:00 EDT 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.81.074019· OSTI ID:21409481

Millo, R; Faccioli, P ^[1]; Scorzato, L ^[2]

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1. Universita degli Studi di Trento and INFN, Via Sommarive 14, Povo, Trento (Italy)
2. European Centre for Theoretical Studies in Nuclear Physics and Related Areas (ECT), Strada delle Tabarelle 286, Villazzano, Trento (Italy)

We develop an approach to investigate the nonperturbative dynamics of quantum field theories, in which specific vacuum field fluctuations are treated as the low-energy dynamical degrees of freedom, while all other vacuum field configurations are explicitly integrated out from the path integral. We show how to compute the effective interaction between the vacuum field degrees of freedom both perturbatively (using stochastic perturbation theory) and fully nonperturbatively (using lattice field theory simulations). The present approach holds to all orders in the couplings and does not rely on the semiclassical approximation.

• OSTI ID: 21409481
• Journal Information: Physical Review. D, Particles Fields, Vol. 81, Issue 7; Other Information: DOI: 10.1103/PhysRevD.81.074019; (c) 2010 The American Physical Society; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CONFIGURATION
COUPLING
DEGREES OF FREEDOM
FLUCTUATIONS
INTERACTIONS
LATTICE FIELD THEORY
PERTURBATION THEORY
SEMICLASSICAL APPROXIMATION
SIMULATION
STOCHASTIC PROCESSES
APPROXIMATIONS
CALCULATION METHODS
CONSTRUCTIVE FIELD THEORY
FIELD THEORIES
QUANTUM FIELD THEORY
VARIATIONS