Oscillating scalar dissipating in a medium
Sign Up to like & getrecommendations! Published in 2021 at "Journal of High Energy Physics"
DOI: 10.1007/jhep11(2021)160
Abstract: Abstract We study how oscillations of a scalar field condensate are damped due to dissipative effects in a thermal medium. Our starting point is a non-linear and non-local condensate equation of motion descending from a… read more here.
Keywords: condensate; non linear; oscillating scalar; medium ... See more keywords
Oscillating scalar fields and the Hubble tension: A resolution with novel signatures
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review D"
DOI: 10.1103/physrevd.101.063523
Abstract: We present a detailed investigation of a subdominant oscillating scalar field [“early dark energy” (EDE)] in the context of resolving the Hubble tension. Consistent with earlier work, but without relying on fluid approximations, we find… read more here.
Keywords: field; oscillating scalar; scalar fields; scalar field ... See more keywords
Oscillating scalar fields in extended quintessence
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review D"
DOI: 10.1103/physrevd.97.023530
Abstract: We study a rapidly-oscillating scalar field with potential $V(\phi) = k|\phi|^n$ nonminally coupled to the Ricci scalar $R$ via a term of the form $(1- 8 \pi G_0 \xi \phi^2) R$ in the action. In… read more here.
Keywords: extended quintessence; fields extended; oscillating scalar; scalar fields ... See more keywords