Zobrazeno 1 - 10
of 134
pro vyhledávání: '"Klabučar, Dubravko"'
Autor:
Dadić, Ivan, Klabučar, Dubravko
Publikováno v:
Symmetry 2023, 15, 1970
We demonstrate that the Finite-Time-Path Field Theory is an adequate tool for calculating neutrino oscillations. We apply this theory using a mass-mixing Lagrangian which involves the correct Dirac spin and chirality structure and a Pontecorvo-Maki-N
Externí odkaz:
http://arxiv.org/abs/2311.11875
Publikováno v:
Particles 3 (2020) 676-692
Within the finite-time-path out-of-equilibrium quantum field theory (QFT), we calculate direct photon emission from early stages of heavy ion collisions, from a narrow window, in which uncertainty relations are still important and they provide a new
Externí odkaz:
http://arxiv.org/abs/2012.00863
Publikováno v:
Eur. Phys. J. A56 (2020) no.10, 257
Exploring the extent of model dependence, we study effects of certain Ansaetze for the T-dependence of the correction term in the QCD topological susceptibility. The one producing unwanted effects on results at T > 0 in the eta'-eta complex in the us
Externí odkaz:
http://arxiv.org/abs/2010.11346
Motivated by our earlier findings of sensitive quark-flavor dependence of QCD topological susceptibility on products of current quark masses and corresponding condensates, we allow the breaking of isospin symmetry. For the purpose of future investiga
Externí odkaz:
http://arxiv.org/abs/2006.15395
Autor:
Kekez, Dalibor, Klabučar, Dubravko
Publikováno v:
Phys.Rev.D 107 (2023) 9, 094025
We study two quark--propagator meromorphic Ans\"atze that admit clear connection between calculations in Euclidean space and Minkowski spacetime. The connection is established through a modified Wick rotation in momentum space, where the integration
Externí odkaz:
http://arxiv.org/abs/2006.02326
Autor:
Dadić, Ivan, Klabučar, Dubravko
Publikováno v:
Particles 2019, 2, 92-102
Our aim is to contribute to quantum field theory (QFT) formalisms useful for descriptions of short time phenomena, dominant especially in heavy ion collisions. We formulate out-of-equilibrium QFT within the finite-time-path formalism (FTP) and renorm
Externí odkaz:
http://arxiv.org/abs/2001.00124
Modulo the scale of spontaneous breaking of Peccei-Quinn symmetry, the axion mass $m_a(T)$ is given by the QCD topological susceptibility ${\chi}(T)$ at all temperatures $T$. From an approach tying the $U_A(1)$ and chiral symmetry breaking and gettin
Externí odkaz:
http://arxiv.org/abs/1912.05619
Publikováno v:
Universe 5 (2019) no.10, 208
The temperature ($T$) dependence of the axion mass is predicted for $T$'s up to $\sim 2.3 \times$ the chiral restoration temperature of QCD. The axion is related to the $U_A(1)$ anomaly. The squared axion mass $m_a(T)^2$ is, modulo the presently unde
Externí odkaz:
http://arxiv.org/abs/1909.09879
Publikováno v:
Phys. Rev. D 99, 014007 (2019)
The approach to the eta'-eta complex employing chirally well-behaved quark-antiquark bound states and incorporating the non-Abelian axial anomaly of QCD through the generalization of the Witten-Veneziano relation, is extended to finite temperatures.
Externí odkaz:
http://arxiv.org/abs/1809.00379
Autor:
Benic, Sanjin, Klabucar, Dubravko
Motivated by the ongoing measurements of the Primakoff process pi- gamma* --> pi- pi0 by COMPASS collaboration at CERN, the transition form factor for the canonical anomalous process gamma* --> pi+ pi0 pi- is calculated in a constituent quark loop mo
Externí odkaz:
http://arxiv.org/abs/1109.3140