Effective-field theory identity for studying first order phase transitions of Ising-like spin models

2021 ◽  
Vol 527 ◽  
pp. 167737
Author(s):  
R.M. Francisco ◽  
J.P. Santos
Keyword(s):  
Field Theory ◽  
Phase Transitions ◽  
Effective Field Theory ◽  
Effective Field ◽  
Spin Models ◽  
First Order ◽  
First Order Phase

scholarly journals Cosmological phase transitions: is effective field theory just a toy?

2021 ◽  
Vol 2021 (3) ◽  
Author(s):  
Marieke Postma ◽  
Graham White
Keyword(s):  
Field Theory ◽  
Phase Transition ◽  
Phase Transitions ◽  
Effective Field Theory ◽  
New Physics ◽  
Effective Field ◽  
Tree Level ◽  
Dark Sector ◽  
First Order ◽  
First Order Phase

Abstract To obtain a first order phase transition requires large new physics corrections to the Standard Model (SM) Higgs potential. This implies that the scale of new physics is relatively low, raising the question whether an effective field theory (EFT) description can be used to analyse the phase transition in a (nearly) model-independent way. We show analytically and numerically that first order phase transitions in perturbative extensions of the SM cannot be described by the SM-EFT. The exception are Higgs-singlet extension with tree-level matching; but even in this case the SM-EFT can only capture part of the full parameter space, and if truncated at dim-6 operators, the description is at most qualitative. We also comment on the applicability of EFT techniques to dark sector phase transitions.

scholarly journals Theoretical uncertainties for cosmological first-order phase transitions

2021 ◽  
Vol 2021 (4) ◽  
Author(s):  
Djuna Croon ◽  
Oliver Gould ◽  
Philipp Schicho ◽  
Tuomas V. I. Tenkanen ◽  
Graham White
Keyword(s):  
Phase Transitions ◽  
Standard Model ◽  
Scale Dependence ◽  
Effective Field ◽  
Bubble Nucleation ◽  
Perturbative Approach ◽  
First Order ◽  
The Standard Model ◽  
First Order Phase ◽  
Renormalisation Scale

Abstract We critically examine the magnitude of theoretical uncertainties in perturbative calculations of fist-order phase transitions, using the Standard Model effective field theory as our guide. In the usual daisy-resummed approach, we find large uncertainties due to renormalisation scale dependence, which amount to two to three orders-of-magnitude uncertainty in the peak gravitational wave amplitude, relevant to experiments such as LISA. Alternatively, utilising dimensional reduction in a more sophisticated perturbative approach drastically reduces this scale dependence, pushing it to higher orders. Further, this approach resolves other thorny problems with daisy resummation: it is gauge invariant which is explicitly demonstrated for the Standard Model, and avoids an uncontrolled derivative expansion in the bubble nucleation rate.

scholarly journals Dissipation in the effective field theory for hydrodynamics: First-order effects

2013 ◽  
Vol 88 (10) ◽  
Author(s):  
Solomon Endlich ◽  
Alberto Nicolis ◽  
Rafael A. Porto ◽  
Junpu Wang
Keyword(s):  
Field Theory ◽  
Effective Field Theory ◽  
Effective Field ◽  
Order Effects ◽  
First Order

scholarly journals Study of the first-order transition in the spin-1 Blume–Capel model by using effective-field theory

2012 ◽  
Vol 376 (45) ◽  
pp. 2922-2925 ◽  
Author(s):  
Emanuel Costabile ◽  
Marcio A. Amazonas ◽  
J. Roberto Viana ◽  
J. Ricardo de Sousa
Keyword(s):  
Field Theory ◽  
Effective Field Theory ◽  
Effective Field ◽  
Order Transition ◽  
First Order ◽  
First Order Transition

scholarly journals QCD phase transitions in an effective field theory

1990 ◽  
Vol 345 (1) ◽  
pp. 57-78 ◽  
Author(s):  
Bruce A. Campbell ◽  
John Ellis ◽  
Keith A. Olive
Keyword(s):  
Field Theory ◽  
Phase Transitions ◽  
Effective Field Theory ◽  
Effective Field
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