Big bang nucleosynthesis and cosmic microwave background constraints on the time variation of the Higgs vacuum expectation value

2003 ◽  
Vol 67 (4) ◽  
Author(s):  
Jerry Jaiyul Yoo ◽  
Robert J. Scherrer
Keyword(s):  
Cosmic Microwave Background ◽  
Time Variation ◽  
Vacuum Expectation ◽  
Vacuum Expectation Value ◽  
Big Bang ◽  
Microwave Background ◽  
Big Bang Nucleosynthesis ◽  
Expectation Value ◽  
Higgs Vacuum

scholarly journals Electroweak Phase Transitions in Einstein’s Static Universe

2018 ◽  
Vol 2018 ◽  
pp. 1-5
Author(s):  
M. Gogberashvili
Keyword(s):  
Vacuum Expectation ◽  
Vacuum Expectation Value ◽  
Electroweak Phase Transition ◽  
Static Universe ◽  
Expectation Value ◽  
First Order ◽  
Higgs Vacuum ◽  
The Standard Model ◽  
Effective Reduction ◽  
New Phase

We suggest using Einstein’s static universe metric for the metastable state after reheating, instead of the Friedman-Robertson-Walker spacetime. In this case, strong static gravitational potential leads to the effective reduction of the Higgs vacuum expectation value, which is found to be compatible with the Standard Model first-order electroweak phase transition conditions. Gravity could also increase the CP-violating effects for particles that cross the new phase bubble walls and thus is able to lead to the successful electroweak baryogenesis scenario.

scholarly journals FERMION MASS IN THE WILSON-YUKAWA APPROACH FOR CHIRAL YUKAWA THEORY

1994 ◽  
Vol 09 (26) ◽  
pp. 4565-4580
Author(s):  
SINYA AOKI ◽  
YOSHIO KIKUKAWA
Keyword(s):  
Vacuum Expectation ◽  
Vacuum Expectation Value ◽  
Fermion Mass ◽  
Yukawa Model ◽  
Expectation Value ◽  
Higgs Vacuum ◽  
Fermion Fields ◽  
Scalar Action ◽  
External Gauge ◽  
The Continuum

We consider a modification of the Wilson-Yukawa model to overcome the difficulty that the fermion mass is not proportional to the Higgs vacuum expectation value. In the modification scalar and fermionic regulator fields are introduced so that all the physical fermion fields possess shift symmetry when the Yukawa coupling vanishes. With the fermionic hopping parameter expansion it is shown that the fermion mass is proportional to the Higgs vacuum expectation value. We find, however, that the coupling of fermion to the external gauge field is always vectorlike in the continuum limit and that further modifications to the scalar action cannot change this undesirable conclusion.

scholarly journals Likely values of the Higgs vacuum expectation value

2010 ◽  
Vol 81 (7) ◽  
Author(s):  
John F. Donoghue ◽  
Koushik Dutta ◽  
Andreas Ross ◽  
Max Tegmark
Keyword(s):  
Vacuum Expectation ◽  
Vacuum Expectation Value ◽  
Expectation Value ◽  
Higgs Vacuum
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