Pregled bibliografske jedinice broj: 1099305
T-Dependence of the Axion Mass when the U_A(1) and Chiral Symmetry Breaking are Tied
T-Dependence of the Axion Mass when the U_A(1) and Chiral Symmetry Breaking are Tied // Acta Physica Polonica B Proceedings Supplement, 13 (2020), 1; 65-70 doi:10.5506/APhysPolBSupp.13.65 (međunarodna recenzija, članak, znanstveni)
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Naslov
T-Dependence of the Axion Mass when the U_A(1) and
Chiral Symmetry Breaking are Tied
Autori
Klabučar, Dubravko ; Horvatić, Davor ; Kekez, Dalibor
Izvornik
Acta Physica Polonica B Proceedings Supplement (1899-2358) 13
(2020), 1;
65-70
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
axion mass axial U(1) chiral SU(3) QCD symmetry breaking temperature dependence
Sažetak
Modulo the scale of spontaneous breaking of Peccei-Quinn symmetry, the axion mass m_a(T) is given by the QCD topological susceptibility χ(T) at all temperatures T. From an approach tying the U_A(1) and chiral symmetry breaking and getting good T-dependence of η and η' mesons, we get χ(T) for an effective Dyson- Schwinger model of nonperturbative QCD. Comparison with lattice results for χ(T), and thus also for m_a(T), shows good agreement for temperatures ranging from zero up to the double of the chiral restoration temperature T_c.
Izvorni jezik
Engleski
Znanstvena područja
Fizika
POVEZANOST RADA
Ustanove:
Institut "Ruđer Bošković", Zagreb,
Prirodoslovno-matematički fakultet, Zagreb
Citiraj ovu publikaciju:
Časopis indeksira:
- Scopus
