Neutron stars yield tighter bounds on muonic scalar and vector fifth forces (g_φμ ≲ 10^{-12}, g_Vμ ≲ 3×10^{-13} for m_X ≲ 100 keV) than SN 1987A, plus hydrostatic constraints for long-range cases.
Collective effects in $\nu \bar{\nu}$ synchrotron radiation from neutron stars
2 Pith papers cite this work. Polarity classification is still indexing.
abstract
We have considered collective effects in $\nu \bar{\nu}$ synchrotron radiation from an ultrarelativistic degenerate electron gas in neutron stars with strong magnetic fields. For this problem we apply a calculation method which explicitly makes use of the fact that the radiating electron moves semi-classically, but takes into account the interaction among particles in a quantum way. First we apply this method to calculate $\nu \bar{\nu}$ synchrotron radiation by an ultrarelativistic electron in vacuum and we compare this result with that obtained previously by other techniques. When a degenerate plasma is considered, we show that collective effects lead to an essential enhancement (about three times) of the vector weak-current contribution to neutrino pair emissivity.
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hep-ph 2years
2026 2verdicts
UNVERDICTED 2representative citing papers
Derives bremsstrahlung production rates and T-dependent energy-loss scalings for leptophilic bosons in NS cores to enable coupling constraints from cooling data.
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Neutron Star Bounds on Muonic Fifth Forces from Picometer to Kilometer Scales
Neutron stars yield tighter bounds on muonic scalar and vector fifth forces (g_φμ ≲ 10^{-12}, g_Vμ ≲ 3×10^{-13} for m_X ≲ 100 keV) than SN 1987A, plus hydrostatic constraints for long-range cases.
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Production of Leptophilic Bosons in Ultradegenerate Relativistic Matter
Derives bremsstrahlung production rates and T-dependent energy-loss scalings for leptophilic bosons in NS cores to enable coupling constraints from cooling data.