Zobrazeno 1 - 10
of 439
pro vyhledávání: '"Vachaspati Tanmay"'
Autor:
Patel, Teerthal, Vachaspati, Tanmay
We study the annihilation of electroweak dumbbells and the dependence of their dynamics on initial dumbbell length and twist. Untwisted dumbbells decay rapidly while maximally twisted dumbbells collapse to form a compact sphaleron-like object, before
Externí odkaz:
http://arxiv.org/abs/2311.00026
Autor:
Albayrak, Omer, Vachaspati, Tanmay
We consider the creation of kink-antikink pairs of a scalar field $\phi$ by the scattering of classical wavepackets of a second scalar field, $\psi$, when there are no direct interactions between $\phi$ and $\psi$. The creation becomes possible only
Externí odkaz:
http://arxiv.org/abs/2308.01962
Publikováno v:
J. Plasma Phys. 89, 905890606 (2023)
In decaying magnetohydrodynamic (MHD) turbulence with a strong magnetic field, the spectral magnetic energy density is known to increase with time at small wavenumbers $k$, provided the spectrum at low $k$ is sufficiently steep. This process is calle
Externí odkaz:
http://arxiv.org/abs/2307.04602
Publikováno v:
Phys.Rev.D 108 (2023) 12, 123540
A characteristic observational signature of cosmic strings are short duration gravitational wave (GW) bursts. These have been searched for by the LIGO-Virgo-KAGRA (LVK) collaboration, and will be searched for with LISA. We point out that these burst
Externí odkaz:
http://arxiv.org/abs/2306.08331
Autor:
Vachaspati, Tanmay
We detail the construction of electric string solutions in $SU(2)$ Yang-Mills-Higgs theory with a scalar in the fundamental representation and discuss the properties of the solution. We show that Schwinger gluon pair production in the electric string
Externí odkaz:
http://arxiv.org/abs/2303.03459
Publikováno v:
Phys.Rev.D 107, 116017 (2023)
We investigate kink-antikink scattering in the $\lambda \phi^4$ model in the presence of an additional scalar field, $\psi$, that is in its quantum vacuum and interacts with $\phi$ via a $\xi \phi^2\psi^2$ term where $\xi$ is the coupling. The final
Externí odkaz:
http://arxiv.org/abs/2303.03415
Autor:
Patel, Teerthal, Vachaspati, Tanmay
We analyze the magnetic field of electroweak dumbbells. While the magnetic field of the untwisted dumbbell is given by the usual dipole formula and falls of as $1/r^3$, dumbbells with twist have a novel twisted magnetic field that only falls off as $
Externí odkaz:
http://arxiv.org/abs/2302.04886
Autor:
Vachaspati, Tanmay
We find electric string solutions in Yang-Mills-Higgs theory.
Comment: 6 pages, 4 figures. v2: title changed; corrected error in parameter range (solution only exists for $\lambda < g^2/4$) and revised discussion accordingly; included explicit c
Comment: 6 pages, 4 figures. v2: title changed; corrected error in parameter range (solution only exists for $\lambda < g^2/4$) and revised discussion accordingly; included explicit c
Externí odkaz:
http://arxiv.org/abs/2212.00808
Autor:
Pereira, Jude, Vachaspati, Tanmay
We study the stability of fluctuations around a homogeneous non-Abelian electric field background that is of a form that is protected from Schwinger pair production. Our analysis identifies the unstable modes and we find a limiting set of parameters
Externí odkaz:
http://arxiv.org/abs/2207.05102
Autor:
Vachaspati, Tanmay
Electric fields in QED are known to discharge due to Schwinger pair production of charged particles. Corresponding electric fields in non-Abelian theory are known to discharge due to the production of gluons. Yet electric flux tubes in QCD ought to b
Externí odkaz:
http://arxiv.org/abs/2204.01902