# Direct anthropic bound on the weak scale from supernovæ explosions

@article{DAmico2019DirectAB,
title={Direct anthropic bound on the weak scale from supernov{\ae} explosions},
author={Guido D’Amico and Alessandro Strumia and Alfredo Urbano and Wei Xue},
journal={Physical Review D},
year={2019}
}
Core-collapse supernovae presumably explode because trapped neutrinos push the material out of the stellar envelope. This process is directly controlled by the weak scale $v$: we argue that supernova explosions happen only if fundamental constants are tuned within a factor of few as $v \sim \Lambda_{\rm QCD}^{3/4} M_{\rm Pl}^{1/4}$, such that neutrinos are trapped in supernovae for a time comparable to the gravitational time-scale. We provide analytic arguments and simulations in spherical… Expand
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