Zobrazeno 1 - 10
of 269
pro vyhledávání: '"RAJARAMAN, ARVIND"'
Autor:
Rajaraman, Arvind
We present the first analytical calculation that shows that perturbations with angular dependence can lead to an instability in gauged Q-balls. We find an explicit condition on the parameters for the Q-ball to become unstable. We compare our predicti
Externí odkaz:
http://arxiv.org/abs/2406.02817
Publikováno v:
Phys.Rev.D 109 (2024) 8, 086003
We perform a general analysis of thin-wall Q-balls in AdS space. We provide numeric solutions and highly accurate analytic approximations over much of the parameter space. These analytic solutions show that AdS Q-balls exhibit significant differences
Externí odkaz:
http://arxiv.org/abs/2310.13660
Publikováno v:
Eur. Phys. J. C 84, 364 (2024)
Q-balls are non-topological solitons arising in scalar field theories. Solutions for rotating Q-balls (and the related boson stars) have been shown to exist when the angular momentum is equal to an integer multiple of the Q-ball charge $Q$. Here we c
Externí odkaz:
http://arxiv.org/abs/2302.11589
Autor:
Rajaraman, Arvind
We develop a method for finding the independent invariant tensors of a gauge theory. Our method uses a theorem relating invariant tensors and constant configurations in field space. We apply our method to an $SU(3)$ gauge theory with matter in the ad
Externí odkaz:
http://arxiv.org/abs/2211.11851
The $4.2\sigma$ discrepancy in the $(g-2)$ of the muon provides a hint that may indicate that physics beyond the standard model is at play. A multi-TeV scale muon collider provides a natural testing ground for this physics. In this paper, we discuss
Externí odkaz:
http://arxiv.org/abs/2208.14464
We consider the search for gamma-rays produced by the annihilation or decay of low-mass dark matter which couples to quarks. In this scenario, most of the photons are produced from the decays of $\pi^0$ or $\eta$ mesons. These decays produce distinct
Externí odkaz:
http://arxiv.org/abs/2205.09356
Publikováno v:
Eur. Phys. J. C 82, 801 (2022)
Complex scalars in U(1)-symmetric potentials can form stable Q-balls, non-topological solitons that correspond to spherical bound-state solutions. If the U(1) charge of the Q-ball is large enough, it can support a tower of unstable radial excitations
Externí odkaz:
http://arxiv.org/abs/2112.00657
We investigate a novel interplay between the decay and annihilation of a particle whose mass undergoes a large shift during a first order phase transition, leading to the particles becoming trapped in the false vacuum and enhancing their annihilation
Externí odkaz:
http://arxiv.org/abs/2109.13941
Publikováno v:
JHEP 10 (2021) 103
Non-topological solitons such as Q-balls and Q-shells have been studied for scalar fields invariant under global and gauged U(1) symmetries. We generalize this framework to include a Proca mass for the gauge boson, which can arise either from spontan
Externí odkaz:
http://arxiv.org/abs/2107.10280
Publikováno v:
Phys. Rev. D 104, 016030 (2021)
Non-topological gauged soliton solutions called Q-balls arise in many scalar field theories that are invariant under a U(1) gauge symmetry. The related, but qualitatively distinct, Q-shell solitons have only been shown to exist for special potentials
Externí odkaz:
http://arxiv.org/abs/2105.02893