Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Kwon, Youngshin"'
Autor:
Choi, Jeongyoon, Jang, Dukjae, Kwon, Youngshin, Seong, Gwangeon, Mun, Myeong Hwan, Kim, Young-Min, Kwak, Kyujin, Cheoun, Myung-Ki
We investigate the evolution of non-extensivity in the photon distribution during the Big Bang Nucleosynthesis (BBN) epoch using Tsallis statistics. Assuming a minimal deviation from the Planck distribution, we construct the perturbed Boltzmann equat
Externí odkaz:
http://arxiv.org/abs/2402.13186
Autor:
Hwang, Eunseok, Jang, Dukjae, Park, Kiwan, Kusakabe, Motohiko, Kajino, Toshitaka, Balantekin, A. Baha, Maruyama, Tomoyuki, Kwon, Youngshin, Kwak, Kyujin, Cheoun, Myung-Ki
We explore the effects of electromagnetic (EM) fluctuations in plasmas on solar neutrino fluxes exploiting the fluctuation-dissipation theorem. We find that the EM spectrum in the solar core is enhanced by the EM fluctuations due to the high density
Externí odkaz:
http://arxiv.org/abs/2211.00907
Publikováno v:
A&A 650, A121 (2021)
We propose a correction of the standard Big Bang nucleosynthesis (BBN) scenario to resolve the primordial lithium problem by considering a possibility that the primordial plasma can deviate from the ideal state. In the standard BBN, the primordial pl
Externí odkaz:
http://arxiv.org/abs/1812.09472
Autor:
Choi, Soonchul, Zhang, Ying, Cheoun, Myung-Ki, Kwon, Youngshin, Kim, Kyungsik, Kim, Hungchong
Publikováno v:
Phys. Rev. C 96, 024311 (2017)
We investigated effects of pairing correlations on the neutron skin thickness and the symmetry energy of finite nuclei. In this calculation we used Hartree-Fock-Bogoliubov (HFB) method with Skyrme forces and effective pairing interactions. The result
Externí odkaz:
http://arxiv.org/abs/1704.02182
We revisit the question of whether the U_A(1) symmetry is effectively restored in hot and dense medium. In particular, by generalizing the Witten-Veneziano formula to finite temperature, we investigate whether the mass of eta'-meson will change in me
Externí odkaz:
http://arxiv.org/abs/1203.6740
Publikováno v:
Phys.Rev.C81:065203,2010
Finite energy sum rules for vector and axial-vector currents are derived in a thermal medium to provide constraints for the spectral behavior of rho and a1 mesons at nonvanishing temperature and hence to study the tendency toward chiral symmetry rest
Externí odkaz:
http://arxiv.org/abs/1004.1059
Publikováno v:
Phys.Rev.C78:055203,2008
An updated investigation of QCD sum rules for the first two moments of rho meson spectral functions, both in vacuum and in-medium, is performed with emphasis on the role of the scale related to spontaneous chiral symmetry breaking in QCD. It is demon
Externí odkaz:
http://arxiv.org/abs/0803.3262
Publikováno v:
Phys.Rev.Lett.96:102001,2006
We explore the possibility of observing the anti-charmed pentaquark state from the $\Theta_c \bar{n} \pi^+$ decay of $B$ meson produced at $B$-factory experiments. We first show that the observed branching ratio of the $B^+$ to $ \Lambda^-_c p \pi^+$
Externí odkaz:
http://arxiv.org/abs/hep-ph/0512074
We perform a QCD sum rule analysis for the pentaquark baryon Theta^+ with the non-interacting $KN$ contribution treated carefully. The coupling of the Theta^+ current to the $KN$ state is evaluated by applying the soft kaon theorem and vacuum saturat
Externí odkaz:
http://arxiv.org/abs/hep-ph/0505040
Publikováno v:
Phys.Lett. B609 (2005) 252-258
The QCD sum rule for the pentaquark $\Theta^+$, first analyzed by Sugiyama, Doi and Oka, is reanalyzed with a phenomenological side that explicitly includes the contribution from the two-particle reducible kaon-nucleon intermediate state. The magnitu
Externí odkaz:
http://arxiv.org/abs/hep-ph/0411104