Tri-critical behavior of the Blume–Emery–Griffiths model on a Kagomé lattice: Effective-field theory and Rigorous bounds

2016 ◽  
Vol 442 ◽  
pp. 22-35 ◽  
Author(s):  
Jander P. Santos ◽  
F.C. Sá Barreto
Keyword(s):  
Field Theory ◽  
Effective Field Theory ◽  
Critical Behavior ◽  
Effective Field ◽  
Kagome Lattice ◽  
Kagomé Lattice ◽  
Rigorous Bounds

Thermodynamic quantities and phase diagrams of spin-1 Blume–Capel bilayer Ising model

2015 ◽  
Vol 29 (20) ◽  
pp. 1550141 ◽  
Author(s):  
Ersin Kantar ◽  
Mehmet Ertaş
Keyword(s):  
Field Theory ◽  
Ising Model ◽  
Phase Diagrams ◽  
Effective Field Theory ◽  
Critical Behavior ◽  
Tricritical Point ◽  
Effective Field ◽  
Square Lattice ◽  
Thermodynamic Quantities ◽  
Hamiltonian Parameters

An effective field theory with correlations has been used to study the critical behavior of the spin-1 Blume–Capel bilayer Ising model on a square lattice. The effects of the Hamiltonian parameters on thermodynamic quantities and phase diagrams are investigated in detail. We found that the system exhibits the first and the second order transitions as well as tricritical point. Furthermore, we have observed that the change of tricritical point values depends on interaction parameters.

Effective Field Theory in Particle Physics and Cosmology

2020 ◽  
Keyword(s):  
Field Theory ◽  
Effective Field Theory ◽  
Particle Physics ◽  
Large Scale ◽  
Effective Field ◽  
Effective Theory ◽  
Soft Collinear Effective Theory ◽  
Multiple Length Scales ◽  
Cosmological Observations ◽  
Standard Models

Effective field theory (EFT) is a general method for describing quantum systems with multiple-length scales in a tractable fashion. It allows us to perform precise calculations in established models (such as the standard models of particle physics and cosmology), as well as to concisely parametrize possible effects from physics beyond the standard models. EFTs have become key tools in the theoretical analysis of particle physics experiments and cosmological observations, despite being absent from many textbooks. This volume aims to provide a comprehensive introduction to many of the EFTs in use today, and covers topics that include large-scale structure, WIMPs, dark matter, heavy quark effective theory, flavour physics, soft-collinear effective theory, and more.

The Fujita-Miyazawa force in the light of effective field theory

2008 ◽  
Author(s):  
Ulf-G. Meiβner ◽  
Hideyuki Sakai ◽  
Kimiko Sekiguchi ◽  
Benjamin F. Gibson
Keyword(s):  
Field Theory ◽  
Effective Field Theory ◽  
Effective Field
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