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Related papers: Neutrino Superfluidity

200 papers

Supersymmetry relates neutrinos with their superpartners, sneutrinos. Unlike neutrinos, sneutrinos may decay visibly in colliders. We discuss how we could get information from neutrino Yukawa couplings in the NMSSM extended with…

High Energy Physics - Phenomenology · Physics 2020-02-26 Stefano Moretti , Claire Shepherd-Themistocleous , Harri Waltari

We investigate the superfluidity and the coherence in dipolar binary Bose mixtures using the hydrodynamic approach. Useful analytical formulas for the excitations spectrum, the correlation function, the static structure factor, and the…

Quantum Gases · Physics 2020-11-11 Abdelaali Boudjemaa

For neutron stars with hyperon-mixed core, neutrino emissivity is studied under the equation of state, obtained by introducing repulsive three-body force universal for all baryons so as to assure the maximum mass compatible with the…

Nuclear Theory · Physics 2009-11-10 T. Takatsuka , R. Tamagaki

Assuming all three known neutrinos are Dirac fermions, $U(1)_{B-L}$ can be an exact symmetry. We show that, if the condition of charge quantization is relaxed, the anomaly-free $B-L$ charges of two out of three right-handed neutrinos can be…

High Energy Physics - Phenomenology · Physics 2026-01-22 Xiyuan Gao , Amir N. Khan

The $^1S_0$ superfluidity of neutron matter is studied in the framework of the generalized Gorkov equation. The vertex corrections to the pairing interaction and the self-energy corrections are introduced and approximated on the same…

Nuclear Theory · Physics 2009-11-07 Caiwan Shen , U. Lombardo , P. Schuck , W. Zuo , N. Sandulescu

The properties of a Bose gas of translation-invariant (TI) bipolarons analogous to Cooper pairs are considered. As in the BCS theory, the description of a TI-bipolaron gas is based on the electron-phonon interaction and Froehlich…

Superconductivity · Physics 2019-03-19 Victor Lakhno

For the Cooper/BCS model interaction in superconductors (SCs) it is shown: a) how BCS-Bose crossover picture transition temperatures Tc, defined self-consistently by both the gap and fermion-number equations, require unphysically large…

Superconductivity · Physics 2007-05-23 M. de Llano , F. J. Sevilla , M. A. Solis , J. J. Valencia

We investigate superfluid phase transitions of asymmetric nuclear matter at finite temperature ($T$) and density ($\rho$) with a low proton fraction ($Y_{\rm p} \le 0.2$) which is relevant to the inner crust and outer core of neutron stars.…

Nuclear Theory · Physics 2020-01-10 Hiroyuki Tajima , Tetsuo Hatsuda , Pieter van Wyk , Yoji Ohashi

Temperature and velocity-dependent $^1$S$_0$ pairing gaps, chemical potentials and entrainment matrix in dense homogeneous neutron-proton superfluid mixtures constituting the outer core of neutron stars, are determined fully…

Nuclear Theory · Physics 2022-03-18 Valentin Allard , Nicolas Chamel

The absolute mass of neutrinos and their nature are presently unknown. Aggregate matter has a coherent weak charge leading to a repulsive interaction mediated by a neutrino pair. Near its range at micron distances the virtual neutrinos are…

Atomic Physics · Physics 2024-04-11 José Bernabeu , Dylan O. Sabulsky , Federico Sánchez , Alejandro Segarra

Models of late-time neutrino mass generation contain new interactions of the cosmic background neutrinos with supernova relic neutrinos (SRNs) through exchange of the on-shell light boson, leading to significant modification of the…

High Energy Physics - Phenomenology · Physics 2008-11-26 Joseph L. Baker , Haim Goldberg , Gilad Perez , Ina Sarcevic

This chapter provides a review of microscopic theories of pairing in nuclear systems and neutron stars. Special attention is given to the mean-field BCS theory and its extensions to include effects of polarization of the medium and…

Nuclear Theory · Physics 2016-11-09 Armen Sedrakian , John W. Clark

In the first part of this talk it is discussed why observed neutrino oscillations (which suggest the existence of right-handed neutrinos with certain Dirac and Majorana masses) seem to select out the route to higher unification based on the…

High Energy Physics - Phenomenology · Physics 2007-05-23 Jogesh C. Pati

A systematic study of the effects of hyperon couplings on hyperon superfluidity is conducted by using the relativistic mean field model. Combining the slope of symmetry energy, the hyperon couplings are determined in two ways -- by the…

Nuclear Theory · Physics 2023-10-04 Zhong-Hao Tu , Shan-Gui Zhou

We present a model of dark matter as a superconducting fluid of Cooper pairs of right handed neutrinos or of vector-like quarks. The superconducting dark matter is induced by attractive channels in the Standard Model Higgs and color sectors…

High Energy Physics - Phenomenology · Physics 2025-08-06 Stephon Alexander , Heliudson Bernardo , Humberto Gilmer

The induced pairing interaction arising from the exchange of collective surface vibrations among nucleons moving in time reversal states close to the Fermi energy is found to lead to values of the pairing gap which are similar to those…

Nuclear Theory · Physics 2007-05-23 F. Barranco , R. A. Broglia , G. Gori , E. Vigezzi , P. F. Bortignon , J. Terasaki

We investigate the influence of nucleon superfluidity on the neutrino emissivity of non-equilibrium beta processes. Calculations are performed of the reduction factors for direct and modified Urca processes with three types of nucleon…

High Energy Astrophysical Phenomena · Physics 2011-09-14 Chun-Mei Pi , Xiao-Ping Zheng , Shu-Hua Yang

The linear response of a neutron spin-triplet superfluid onto external weak axial-vector field is studied for the case of $^{3}P_{2}$ pairing with a projection of the total angular momentum $m_{j}=0$. The problem is considered in the BCS…

Solar and Stellar Astrophysics · Physics 2014-11-20 L. B. Leinson

Based on the experimental discovery that the mass-square of neutrino is negative, a quantum theory for superluminal neutrino is proposed. Two Weyl equations coupled together via a mass term respecting the maximum parity violation lead to a…

High Energy Physics - Phenomenology · Physics 2007-05-23 Guang-jiong Ni , Tsao Chang

The effect of nucleon-nucleon correlations in symmetric nuclear matter at finite temperature is studied beyond BCS theory. Starting from a Hartree-Fock description of nuclear matter with the Gogny effective interaction, we add correlations…

Nuclear Theory · Physics 2015-03-17 Meng Jin , Michael Urban , Peter Schuck
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