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8 papers · 2 filters
Geometry-free neutrino masses in curved spacetime
Atsushi Watanabe, Koichi Yoshioka
The seesaw-induced neutrino mass is discussed in a generic class of curved spacetime, including the flat and warped extra dimensions. For Majorana masses in the bulk and on the bou…
Diffuse Ultra-High Energy Neutrino Fluxes and Physics Beyond the Standard Model
Atri Bhattacharya, Sandhya Choubey, Raj Gandhi +1
We study spectral distortions of diffuse ultra-high energy (UHE) neutrino flavour fluxes resulting due to physics beyond the Standard Model (SM). Even large spectral differences be…
QCD phase diagram at imaginary baryon and isospin chemical potentials
Yuji Sakai, Hiroaki Kouno, Masanobu Yahiro
We explore the phase diagram of two-flavor QCD at imaginary values of baryon and isospin chemical potentials analyzing the thermodynamic potential of QCD analytically and that of t…
Dual quark condensate in the Polyakov-loop extended Nambu--Jona-Lasinio model
Kouji Kashiwa, Hiroaki Kouno, Masanobu Yahiro
The dual quark condensate proposed recently as a new order parameter of the spontaneous breaking of the symmetry are evaluated by the Polyakov-loop extend…
The Role and Detectability of the Charm Contribution to Ultra High Energy Neutrino Fluxes
Raj Gandhi, Abhijit Samanta, Atsushi Watanabe
It is widely believed that charm meson production and decay may play an important role in high energy astrophysical sources of neutrinos, especially those that are baryon-rich, pro…
Roberge-Weiss phase transition and its endpoint
Hiroaki Kouno, Yuji Sakai, Kouji Kashiwa +1
The Roberge-Weiss (RW) phase transition in the imaginary chemical potential region is analyzed by the Polyakov-loop extended Nambu--Jona-Lasinio (PNJL) model. In the RW phase trans…