Thermal Field Theory in real-time formalism : concepts and applications for particle decays
Lundberg, Torbjörn LU
and Pasechnik, Roman
LU
(2021)
In European Physical Journal A
57(2).
- Abstract
This review represents a detailed and comprehensive discussion of the Thermal Field Theory (TFT) concepts and key results in Yukawa-type theories. We start with a general pedagogical introduction into the TFT in the imaginary- and real-time formulation. As phenomenologically relevant implications, we present a compendium of thermal decay rates for several typical reactions calculated within the framework of the real-time formalism and compared to the imaginary-time results found in the literature. Processes considered here are those of a neutral (pseudo)scalar decaying into two distinct (pseudo)scalars or into a fermion-antifermion pair. These processes are extended from earlier works to include chemical potentials and distinct species... (More)
This review represents a detailed and comprehensive discussion of the Thermal Field Theory (TFT) concepts and key results in Yukawa-type theories. We start with a general pedagogical introduction into the TFT in the imaginary- and real-time formulation. As phenomenologically relevant implications, we present a compendium of thermal decay rates for several typical reactions calculated within the framework of the real-time formalism and compared to the imaginary-time results found in the literature. Processes considered here are those of a neutral (pseudo)scalar decaying into two distinct (pseudo)scalars or into a fermion-antifermion pair. These processes are extended from earlier works to include chemical potentials and distinct species in the final state. In addition, a (pseudo)scalar emission off a fermion line is also discussed. These results demonstrate the importance of thermal effects in particle decay observables relevant in many phenomenological applications in systems at high temperatures and densities.
(Less)
- author
- Lundberg, Torbjörn
LU
and Pasechnik, Roman
LU
- organization
- publishing date
- 2021-02
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- finite, temperature, effect, decay, rate, real, imaginary, time, formalism, real-time, imaginary-time, two-body, neutral, pseudoscalar, scalar, charge, spin-1/2, fermions, thermal, quantum, field, theory, equilibrium, ändlig, temperatur, effect, sönderfall, sönderfallshastighet, reell, imaginär, tid, formalism, reelltid, imaginärtid, tvåkropp, neutral, pseudoskalär, skalär, laddning, spin-1/2, fermioner, termisk, kvantum, kvantfältteori, fält, teori, jämvikt
- in
- European Physical Journal A
- volume
- 57
- issue
- 2
- article number
- 71
- pages
- 57 pages
- publisher
- Springer
- external identifiers
-
- scopus:85101580700
- ISSN
- 1434-6001
- DOI
- 10.1140/epja/s10050-020-00288-5
- language
- English
- LU publication?
- yes
- id
- 37fe15c4-9352-48b6-95fc-a15a40207f2d
- date added to LUP
- 2021-05-20 11:05:20
- date last changed
- 2024-04-20 06:18:59
@article{37fe15c4-9352-48b6-95fc-a15a40207f2d,
abstract = {{<p>This review represents a detailed and comprehensive discussion of the Thermal Field Theory (TFT) concepts and key results in Yukawa-type theories. We start with a general pedagogical introduction into the TFT in the imaginary- and real-time formulation. As phenomenologically relevant implications, we present a compendium of thermal decay rates for several typical reactions calculated within the framework of the real-time formalism and compared to the imaginary-time results found in the literature. Processes considered here are those of a neutral (pseudo)scalar decaying into two distinct (pseudo)scalars or into a fermion-antifermion pair. These processes are extended from earlier works to include chemical potentials and distinct species in the final state. In addition, a (pseudo)scalar emission off a fermion line is also discussed. These results demonstrate the importance of thermal effects in particle decay observables relevant in many phenomenological applications in systems at high temperatures and densities.</p>}},
author = {{Lundberg, Torbjörn and Pasechnik, Roman}},
issn = {{1434-6001}},
keywords = {{finite; temperature; effect; decay; rate; real; imaginary; time; formalism; real-time; imaginary-time; two-body; neutral; pseudoscalar; scalar; charge; spin-1/2; fermions; thermal; quantum; field; theory; equilibrium; ändlig; temperatur; effect; sönderfall; sönderfallshastighet; reell; imaginär; tid; formalism; reelltid; imaginärtid; tvåkropp; neutral; pseudoskalär; skalär; laddning; spin-1/2; fermioner; termisk; kvantum; kvantfältteori; fält; teori; jämvikt}},
language = {{eng}},
number = {{2}},
publisher = {{Springer}},
series = {{European Physical Journal A}},
title = {{Thermal Field Theory in real-time formalism : concepts and applications for particle decays}},
url = {{http://dx.doi.org/10.1140/epja/s10050-020-00288-5}},
doi = {{10.1140/epja/s10050-020-00288-5}},
volume = {{57}},
year = {{2021}},
}