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In this paper, we analyse the quantum coherence behaviors of a single qubit in the relativistic regime beyond the single-mode approximation. Firstly, we investigate the freezing condition of quantum coherence in fermionic system. We also…

Quantum Physics · Physics 2019-05-01 Zhiming Huang , Haozhen Situ , Cai Zhang

I present the status of direct dark matter detection with specific attention to the experimental results and their phenomenological interpretation in terms of dark matter interactions. In particular I review a new and more general approach…

High Energy Physics - Phenomenology · Physics 2014-02-10 Paolo Panci

In this work we study the annihilation of fermionic dark matter, considering it as a neutral particle with non-vanishing magnetic ($M$) and electric ($D$) dipole moments. Effective cross section of the process $\chi \overline{\chi}…

High Energy Physics - Phenomenology · Physics 2023-04-14 C. Arellano-Celiz , A. Avilez-López , J. E. Barradas-Guevara , A. Carrillo-Monteverde , J. L. Díaz-Cruz , O. Félix-Beltrán

Composite dark matter is a natural setting for implementing inelastic dark matter - the O(100 keV) mass splitting arises from spin-spin interactions of constituent fermions. In models where the constituents are charged under an axial U(1)…

High Energy Physics - Phenomenology · Physics 2014-11-20 Daniele S. M. Alves , Siavosh R. Behbahani , Philip Schuster , Jay G. Wacker

We consider the absorption spectrum of a Fermi gas mixed with a minority species when majority fermions are transferred to another internal state by an external probe. In the limit when the minority species is much more massive than the…

Quantum Gases · Physics 2010-04-13 G. M. Bruun , C. J. Pethick , Zhenhua Yu

A Dirac fermion carrying an integral weak isospin and the vanishing hypercharge is considered as its neutral component can be a promising dark matter candidate (called the minimal dark matter) whose mass is of order 100 GeV. While the…

High Energy Physics - Phenomenology · Physics 2011-07-18 Eung Jin Chun

There exists an observed "desert" spanning six orders of magnitude between O(0.5) eV and O(0.5) MeV in the fermion mass spectrum. We argue that it might accommodate one or more keV sterile neutrinos as a natural candidate for warm dark…

High Energy Physics - Phenomenology · Physics 2011-02-25 Y. F. Li , Zhi-zhong Xing

We study the physical conditions for the occurrence of ferromagnetic instability in a neutral plasma of fermions. We consider a system of two species $M$ and $Y$ which are oppositely charged under a local $U(1)_{X}$, with $M$ much lighter…

Cosmology and Nongalactic Astrophysics · Physics 2019-01-21 R. B. MacKenzie , M. B. Paranjape , U. A. Yajnik

Properties of symmetric and asymmetric nuclear matter have been investigated in the relativistic Dirac-Brueckner-Hartree-Fock approach based on projection techniques using the Bonn A potential. The momentum, density, and isospin dependence…

Nuclear Theory · Physics 2009-11-11 E. N. E. van Dalen , C. Fuchs , Amand Faessler

Modifications on the predictions about the matter power spectrum based on the hypothesis of a tiny contribution from a degenerate Fermi gas (DFG) test-fluid to some dominant cosmological scenario are investigated. Reporting about the…

Cosmology and Nongalactic Astrophysics · Physics 2015-03-19 E. L. D. Perico , Alex E. Bernardini

NGC 1068 is the brightest extragalactic source in high-energy neutrinos as seen by IceCube, yet the accompanying gamma-ray flux is orders of magnitude weaker. It has been argued that this indicates that the bulk of neutrinos and gamma rays…

High Energy Physics - Phenomenology · Physics 2025-11-06 Gonzalo Herrera

We thoroughly explore the cosmic gravitational focusing of cosmic neutrino fluid (C$\nu$F) by dark matter (DM) halo using both general relativity for a point source of gravitational potential and Boltzmann equations for continuous…

High Energy Physics - Phenomenology · Physics 2024-07-08 Shao-Feng Ge , Pedro Pasquini , Liang Tan

We describe a simple dark sector structure which, if present, has implications for the direct detection of dark matter (DM): the Dark Sink. A Dark Sink transports energy density from the DM into light dark-sector states that do not…

High Energy Physics - Phenomenology · Physics 2024-10-02 Prudhvi N. Bhattiprolu , Robert McGehee , Aaron Pierce

We consider, in a model-independent framework, the potential for observing dark matter in neutrino detectors through the interaction $\bar{f} p \to e^+ n$, where $f$ is a dark fermion. Operators of dimension six or less are considered, and…

High Energy Physics - Phenomenology · Physics 2009-10-19 Jennifer Kile

The nature of dark matter, the invisible substance making up over $80\%$ of the matter in the Universe, is one of the most fundamental mysteries of modern physics. Ultralight bosons such as axions, axion-like particles or dark photons could…

It has been suggested that dark matter particles which scatter inelastically from detector target nuclei could explain the apparent incompatibility of the DAMA modulation signal (interpreted as evidence for particle dark matter) with the…

I review some key aspects of capture and possible observable effects of particle dark matter in stars. Focusing on the transport of heat from captured asymmetric dark matter, I outline existing computational methods, and the challenges that…

High Energy Physics - Phenomenology · Physics 2020-09-03 Aaron C. Vincent

Since the report of the PeV-TeV neutrinos by the IceCube Collaboration, various particle physics models have been proposed to explain the neutrino spectrum by dark matter particles decaying into neutrinos and other Standard Model…

High Energy Physics - Phenomenology · Physics 2018-01-17 Nagisa Hiroshima , Ryuichiro Kitano , Kazunori Kohri , Kohta Murase

A new dynamic is identified between dark matter and nuclei. Nuclei accelerated to MeV energies by the internal potential of composite dark matter can undergo nuclear fusion. This effect arises in simple models of composite dark matter made…

High Energy Physics - Phenomenology · Physics 2022-01-25 Javier F. Acevedo , Joseph Bramante , Alan Goodman

The nature of dark matter (DM) particles and the mechanism that provides their measured relic abundance are currently unknown. In this paper we investigate inert scalar and vector like fermion doublet DM candidates with a charge asymmetry…

High Energy Physics - Phenomenology · Physics 2015-05-30 Chiara Arina , Narendra Sahu