Zobrazeno 1 - 10
of 1 266
pro vyhledávání: '"Long, Andrew"'
In the strong magnetic field of a neutron star's magnetosphere, axions coupled to electromagnetism develop a nonzero probability to convert into photons. Past studies have revealed that the axion-photon conversion can be resonantly enhanced. We recog
Externí odkaz:
http://arxiv.org/abs/2408.04551
Autor:
Long, Andrew J., Turner, Jessica
We study a planar bubble wall that is traveling at an ultrarelativistic speed through a thermal plasma. This situation may arise during a first order electroweak phase transition in the early universe. As particles cross the wall, it is assumed that
Externí odkaz:
http://arxiv.org/abs/2407.18196
Autor:
Kolb, Edward W., Long, Andrew J.
Cosmological gravitational particle production (CGPP) is the creation of particles in an expanding universe due solely to their gravitational interaction. These particles can play an important role in the cosmic history through their connection to va
Externí odkaz:
http://arxiv.org/abs/2312.09042
The cores of dense stars are a powerful laboratory for studying feebly coupled particles such as axions. Some of the strongest constraints on axionlike particles and their couplings to ordinary matter derive from considerations of stellar axion emiss
Externí odkaz:
http://arxiv.org/abs/2309.03889
Publikováno v:
Phys. Rev. D 109, 043534 (2024)
In the primordial plasma, at temperatures above the scale of electroweak symmetry breaking, the presence of chiral asymmetries is expected to induce the development of helical hypermagnetic fields through the phenomenon of chiral plasma instability.
Externí odkaz:
http://arxiv.org/abs/2307.09385
Autor:
Hagimoto, Ray, Long, Andrew J.
The presence of axion strings in the Universe after recombination can leave an imprint on the polarization pattern of the cosmic microwave background radiation through the phenomenon of axion-string-induced birefringence via the hyperlight axion-like
Externí odkaz:
http://arxiv.org/abs/2306.07351
The phenomenon of cosmological gravitational particle production (CGPP) is expected to occur during the period of inflation and the transition into a hot big bang cosmology. Particles may be produced even if they only couple directly to gravity, and
Externí odkaz:
http://arxiv.org/abs/2302.04390
Publikováno v:
JCAP 05 (2023) 015
Wave-like dark matter made of spin-1 particles (dark photons) is expected to form ground state clumps called "vector solitons", which can have different polarizations. In this work, we consider the interaction of dark photons with photons, expressed
Externí odkaz:
http://arxiv.org/abs/2301.11470