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The abundances resulting from $r$-process nucleosynthesis as predicted by simulations of binary neutron star (BNS) mergers remain an open question as the current state of the art is still restricted to three-species neutrino transport. We…

High Energy Astrophysical Phenomena · Physics 2025-05-16 Harry Ho-Yin Ng , Carlo Musolino , Samuel D. Tootle , Luciano Rezzolla

We propose a model of neutrino mass generation in extra dimension. Allowing a large lepton number violation on a distant brane spatially separated from the standard model brane, a small neutrino mass is naturally generated due to an…

High Energy Physics - Phenomenology · Physics 2010-03-02 Seong Chan Park , Kai Wang , Tsutomu T. Yanagida

We present simulations of the evolution of a proto-neutron star in which kaon-condensed matter might exist, including the effects of finite temperature and trapped neutrinos. The phase transition from pure nucleonic matter to the kaon…

Astrophysics · Physics 2009-10-31 Jose A. Pons , Juan A. Miralles , M. Prakash , James M. Lattimer

The thermal relic abundance of species critically depends on the assumed underlying cosmological model. In the case of neutralinos, freeze-out takes place long before Big Bang Nucleosynthesis, which provides the strongest constraint on the…

Astrophysics · Physics 2007-05-23 Stefano Profumo , Piero Ullio

We study neutrino spin oscillations in background matter under the influence of strong electromagnetic and gravitational fields. The neutrino spin evolution is treated quasiclassically. We derive the effective Hamiltonian governing spin…

High Energy Physics - Phenomenology · Physics 2018-01-09 Maxim Dvornikov

Whenever fields are allowed to propagate in different portions of space-time, the four dimensional theory exhibits an effective violation of the principle of equivalence. We discuss the conditions under which such an effect is relevant for…

High Energy Physics - Phenomenology · Physics 2009-01-07 M. Fabbrichesi , M. Piai , G. Tasinato

We study decoherence effects in neutrino flavour oscillations in curved spacetime with particular emphasis on the lensing in a Schwarzschild geometry. Assuming Gaussian wave packets for neutrinos, we argue that the decoherence length…

High Energy Physics - Phenomenology · Physics 2021-11-12 Himanshu Swami , Kinjalk Lochan , Ketan M. Patel

We investigate new physics effects on coherent elastic neutrino nucleus scattering within the framework of nonstandard interactions and generalized neutrino interactions. Additionally, we examine the possibility of light mediators from a…

High Energy Physics - Experiment · Physics 2025-09-08 S. Karadağ , M. Deniz , S. Karmakar , M. K. Singh , M. Demirci , Greeshma C. , H. B. Li , S. T. Lin , M. F. Mustamin , V. Sharma , L. Singh , M. K. Singh , V. Singh , H. T. Wong

We investigate the impact of pairing correlations on neutrino transport in stellar matter. Our analysis is extended to nuclear matter conditions where large density fluctuations develop, associated with the onset of the liquid-vapor phase…

Nuclear Theory · Physics 2016-08-24 S. Burrello , M. Colonna , F. Matera

Astrophysical techniques have pioneered the discovery of neutrino mass properties. Current cosmological observations give an upper bound on neutrino masses by attempting to disentangle the small neutrino contribution from the sum of all…

X-ray pulsars experiencing extreme mass accretion rates can produce neutrino emission in the MeV energy band. Neutrinos in these systems are emitted in close proximity to the stellar surface and subsequently undergo gravitational bending in…

The successful detection of continuous gravitational waves from spinning neutron stars (NSs) will shape our understanding of the physical properties of dense matter under extreme conditions. Binary population synthesis simulations show that…

General Relativity and Quantum Cosmology · Physics 2025-02-14 Wen-Fan Feng , Tan Liu , Yan Wang , Lijing Shao

A massive black hole binary might resonantly trap a star (e.g. a white dwarf) and the gas released by its tidal disruption might emit electromagnetic wave signals around the coalescence of the binary. With post-Newtonian equations of motion…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-28 Naoki Seto , Takayuki Muto

Neutral particles can couple with the $U(1)$ gauge field in the adjoint representation at the tree level if the space-time coordinates are noncommutative (NC). Considering neutrino-photon coupling in the NC QED framework, we obtain the…

High Energy Physics - Phenomenology · Physics 2011-07-22 M. M. Ettefaghi , T. Shakouri

Neutrinos can play an important role in the evolution of the Universe, modifying some of the cosmological observables. In this contribution we summarize the main aspects of cosmological relic neutrinos and we describe how the precision of…

High Energy Physics - Phenomenology · Physics 2012-12-27 Julien Lesgourgues , Sergio Pastor

Neutrino capture on tritium has emerged as a promising method for detecting the cosmic neutrino background (CvB). We show that relic neutrinos are captured most readily when their spin vectors are anti-aligned with the polarization axis of…

Cosmology and Nongalactic Astrophysics · Physics 2014-10-29 Mariangela Lisanti , Benjamin R. Safdi , Christopher G. Tully

Massive stars commonly form binaries that can evolve into compact systems via common envelope evolution (CEE), a critical but poorly understood phase -- especially when the companion is a neutron star. Understanding the drag force exerted…

High Energy Astrophysical Phenomena · Physics 2026-04-23 Daiyu Sakurai , Ryuichiro Akaho , Shoichi Yamada

Of all high-energy particles, only neutrinos can directly convey astronomical information from the edge of the universe---and from deep inside the most cataclysmic high-energy processes. Copiously produced in high-energy collisions,…

Astrophysics · Physics 2009-11-06 F. Halzen

In proto-neutron stars with strong magnetic fields, the cross section for $\nu_e$ ($\bar\nu_e$) absorption on neutrons (protons) depends on the local magnetic field strength due to the quantization of energy levels for the $e^-$ ($e^+$)…

Astrophysics · Physics 2009-10-30 Dong Lai , Y. -Z. Qian

A joint effort of cryogenic microcalorimetry (CM) and high-precision Penning-trap mass spectrometry (PT-MS) in investigating atomic orbital electron capture (EC) can shed light on the possible existence of heavy sterile neutrinos with…

High Energy Physics - Phenomenology · Physics 2015-06-18 P. E. Filianin , K. Blaum , S. A. Eliseev , L. Gastaldo , Yu. N. Novikov , V. M. Shabaev , I. I. Tupitsyn , J. Vergados
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