TY - JOUR
T1 - Compact objects as the catalysts for vacuum decays
AU - Oshita, Naritaka
AU - Yamada, Masaki
AU - Yamaguchi, Masahide
N1 - Funding Information:
Masaki Yamada thanks F. Takahashi for a stimulating discussion. This work was supported by Grant-in-Aid for JSPS Fellow No. 16J01780 (N.O.), JP25287054 (M.Y.), JP15H05888 (M.Y.), JP18H04579 (M.Y.), and JP18K18764 (M.Y.).
Publisher Copyright:
© 2019 The Authors
PY - 2019/4/10
Y1 - 2019/4/10
N2 - We discuss vacuum decays catalyzed by spherical and horizonless objects and show that an ultra compact object could catalyze a vacuum decay around it within the cosmological time. The catalytic effect of a horizonless compact object could be more efficient than that of a black hole since in this case there is no suppression of the decay rate due to the decrement of its Bekestein entropy. If there exists another minimum with AdS vacuum in the Higgs potential at a high energy scale, the abundance of compact objects such as monopoles, neutron stars, axion stars, oscillons, Q-balls, black hole remnants, gravastars and so on, could be severely constrained. We find that an efficient enhancement of nucleation rate occurs when the size of the compact object is comparable to its Schwarzschild radius and the bubble radius.
AB - We discuss vacuum decays catalyzed by spherical and horizonless objects and show that an ultra compact object could catalyze a vacuum decay around it within the cosmological time. The catalytic effect of a horizonless compact object could be more efficient than that of a black hole since in this case there is no suppression of the decay rate due to the decrement of its Bekestein entropy. If there exists another minimum with AdS vacuum in the Higgs potential at a high energy scale, the abundance of compact objects such as monopoles, neutron stars, axion stars, oscillons, Q-balls, black hole remnants, gravastars and so on, could be severely constrained. We find that an efficient enhancement of nucleation rate occurs when the size of the compact object is comparable to its Schwarzschild radius and the bubble radius.
KW - Compact objects
KW - First order phase transition
KW - Higgs metastability
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U2 - 10.1016/j.physletb.2019.02.032
DO - 10.1016/j.physletb.2019.02.032
M3 - Article
AN - SCOPUS:85062283927
SN - 0370-2693
VL - 791
SP - 149
EP - 155
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
ER -