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The static diffraction intensity distribution from large material system conceived as perfectly homogeneous system made inhomogeneous, though substitution of groups of atoms, small particles, by other groups of atoms, is explicitly…

材料科学 · 物理学 2020-10-21 Noureddine Hadji

We present a mechanism for dark matter (DM) production involving a self-interacting sector that at early times is ultra-relativistic but far-underpopulated relative to thermal equilibrium (such initial conditions often arise, e.g., from…

宇宙学与河外天体物理 · 物理学 2020-10-28 John March-Russell , Hannah Tillim , Stephen M. West

Dark matter interactions with massless or very light Standard Model particles, as photons or neutrinos, may lead to a suppression of the matter power spectrum at small scales and of the number of low mass haloes. Bounds on the dark matter…

宇宙学与河外天体物理 · 物理学 2019-01-30 Laura Lopez-Honorez , Olga Mena , Pablo Villanueva-Domingo

Models of inelastic (or pseudo-Dirac) dark matter commonly assume an accidental symmetry between the left-handed and right-handed mass terms in order to suppress diagonal couplings. We point out that this symmetry is unnecessary, because…

高能物理 - 唯象学 · 物理学 2025-02-04 Giovani Dalla Valle Garcia , Felix Kahlhoefer , Maksym Ovchynnikov , Thomas Schwetz

A CPT violating decoherence scenario can easily account for all the experimental evidence in the neutrino sector including LSND. In this work it is argued that this framework can also accommodate the Dark Energy content of the Universe, as…

高能物理 - 唯象学 · 物理学 2009-11-10 Gabriela Barenboim , Nick Mavromatos

We study the Universe at the late stage of its evolution and deep inside the cell of uniformity. At such a scale the Universe is highly inhomogeneous and filled with discretely distributed inhomogeneities in the form of galaxies and groups…

广义相对论与量子宇宙学 · 物理学 2016-08-25 Mariam Bouhmadi-López , João Morais , Alexander Zhuk

Dark Matter (DM) residing in a secluded sector with suppressed portal interaction could evade direct detections and collider searches. The indirect detections provide the most robust probe to this scenario. Depending on the structure of the…

高能物理 - 唯象学 · 物理学 2023-08-14 Jinmian Li , Takaaki Nomura , Junle Pei , Xiangwei Yin , Cong Zhang

For dark matter (DM) direct detections, the kinematic effects such as those of the inelastic scattering can play important role in light DM searches. The light DM detection is generally difficult because of its small recoil energy. But the…

高能物理 - 唯象学 · 物理学 2024-10-02 Hong-Jian He , Yu-Chen Wang , Jiaming Zheng

Asymmetric dark matter (ADM) is an attractive framework relating the observed baryon asymmetry of the Universe to the dark matter density. A composite particle in a new strong dynamics is a promising candidate for ADM as the strong dynamics…

高能物理 - 唯象学 · 物理学 2018-12-26 Masahiro Ibe , Ayuki Kamada , Shin Kobayashi , Wakutaka Nakano

Is Dark Matter part of a Dark Sector? The possibility of a dark sector neutral under Standard Model (SM) forces furnishes an attractive explanation for the existence of Dark Matter (DM), and is a compelling new-physics direction to explore…

We numerically investigate a lattice regularized version of quantum electrodynamics in one spatial dimension (Schwinger model). We work at a density where lattice commensuration effects are important, and preclude analytic solution of the…

强关联电子 · 物理学 2018-09-12 A. A. Akhtar , Rahul M. Nandkishore , S. L. Sondhi

We examine data from the DAMA, CoGeNT, CRESST-II and CDMS/Si direct detection experiments in the context of multi-component hidden sector dark matter. The models considered feature a hidden sector with two or more stable particles charged…

高能物理 - 唯象学 · 物理学 2013-08-09 R. Foot

We discuss the compatibility of the combined annual modulation effect measured by DAMA/LIBRA-phase1 and DAMA/LIBRA-phase2 with an explanation in terms of inelastic scattering events induced by the most general Galilean-invariant effective…

高能物理 - 唯象学 · 物理学 2019-06-05 Sunghyun Kang , Stefano Scopel , Gaurav Tomar

We consider the prospects for multiple dark matter direct detection experiments to determine if the interactions of a dark matter candidate are isospin-violating. We focus on theoretically well-motivated examples of isospin-violating dark…

高能物理 - 唯象学 · 物理学 2018-03-09 Chris Kelso , Jason Kumar , Danny Marfatia , Pearl Sandick

We discuss a scenario where the DAMA modulation effect is explained by a Weakly Interacting Massive Particle (WIMP) which upscatters inelastically to a heavier state and predominantly couples to the spin of protons. In this scenario…

宇宙学与河外天体物理 · 物理学 2016-02-26 Stefano Scopel , KookHyun Yoon

Mixed damping is a physical effect that occurs when a heavy species is coupled to a relativistic fluid which is itself free streaming. As a cross-case between collisional damping and free-streaming, it is crucial in the context of…

宇宙学与河外天体物理 · 物理学 2019-08-21 Julia Stadler , Céline Bœhm , Olga Mena

If the dark sector possesses long-range self-interactions, these interactions can source dramatic collective instabilities even in astrophysical settings where the collisional mean free path is long. Here, we focus on the specific case of…

高能物理 - 唯象学 · 物理学 2025-09-11 William DeRocco , Pierce Giffin

Despite great agreement with experiment, the Standard Model (SM) of particle physics lacks a viable Dark Matter (DM) candidate and sufficient amount of CP-violation to account for the observed baryon excess in the universe. Non-minimal…

高能物理 - 唯象学 · 物理学 2020-05-06 Venus Keus

Dark matter (DM) coupled to light mediators has been invoked to resolve the putative discrepancies between collisionless cold DM and galactic structure observations. However, $\gamma$-ray searches and the CMB strongly constrain such…

高能物理 - 唯象学 · 物理学 2018-06-27 Iason Baldes , Marco Cirelli , Paolo Panci , Kalliopi Petraki , Filippo Sala , Marco Taoso

We present here for the first time a unifying perspective for the lack of equipartition in non-linear ordered systems and the low temperature phase-space fragmentation in disordered systems. We demonstrate that they are just two…

统计力学 · 物理学 2021-02-08 Giacomo Gradenigo , Fabrizio Antenucci , Luca Leuzzi