scholarly journals O(N)-symmetric λφ4theory: The Gaussian-effective-potential approach

1987 ◽  
Vol 35 (8) ◽  
pp. 2407-2414 ◽  
Author(s):  
P. M. Stevenson ◽  
B. Allès ◽  
R. Tarrach
Keyword(s):  
Effective Potential ◽  
Potential Approach ◽  
Gaussian Effective Potential

Gaussian Approach to (1 + 1) Dimensional φ6 Solitons at Finite Temperature

1990 ◽  
Vol 45 (6) ◽  
pp. 779-782
Author(s):  
Rajkumar Roychoudhury ◽  
Manasi Sengupta
Keyword(s):  
Critical Temperature ◽  
Effective Potential ◽  
Finite Temperature ◽  
Soliton Solutions ◽  
Gap Equation ◽  
Potential Approach ◽  
Mass Gap ◽  
Gaussian Effective Potential

AbstractUsing the Gaussian effective potential approach, φ6 soliton solutions at finite temperature are studied for both the general case and the particular case λ2 = 2ξm2. A critical temperature is found at which soliton solutions cease to exist. The effective potential together with the mass-gap equation are studied in detail, and comparison with existing work on this subject is made

Gaussian Approach to (1+1)Dimensional Solitons at Finite Temperature

1989 ◽  
Vol 44 (6) ◽  
pp. 524-528
Author(s):  
Rajkumar Roychoudhury ◽  
Manasi Sengupta
Keyword(s):  
Critical Temperature ◽  
Effective Potential ◽  
Finite Temperature ◽  
Soliton Solutions ◽  
Gap Equation ◽  
Potential Approach ◽  
Mass Gap ◽  
Gaussian Effective Potential

Soliton solutions at finite temperature have been studied using the Gaussian effective potential approach. A critical temperature Tc is obtained at which the soliton solutions cease to exist. The effective potential has also been calculated together with the Mass Gap equation.

scholarly journals On the Polish doughnut accretion disc via the effective potential approach

2012 ◽  
Vol 428 (2) ◽  
pp. 952-982 ◽  
Author(s):  
D. Pugliese ◽  
G. Montani ◽  
M. G. Bernardini
Keyword(s):  
Effective Potential ◽  
Accretion Disc ◽  
Potential Approach

scholarly journals Waterlike anomalies in hard core–soft shell nanoparticles using an effective potential approach: Pinned vs adsorbed polymers

2020 ◽  
Vol 127 (5) ◽  
pp. 054701 ◽  
Author(s):  
Murilo S. Marques ◽  
Thiago P. O. Nogueira ◽  
Rodrigo F. Dillenburg ◽  
Marcia C. Barbosa ◽  
José Rafael Bordin
Keyword(s):  
Effective Potential ◽  
Hard Core ◽  
Shell Nanoparticles ◽  
Potential Approach ◽  
Soft Shell ◽  
Adsorbed Polymers

scholarly journals GAUSSIAN EFFECTIVE POTENTIAL AND ANTIFERROMAGNETISM IN THE HUBBARD MODEL

2012 ◽  
Vol 26 (20) ◽  
pp. 1250130 ◽  
Author(s):  
L. MAROTTA ◽  
F. SIRINGO
Keyword(s):  
Hubbard Model ◽  
Effective Potential ◽  
Square Lattice ◽  
Antiferromagnetic Order ◽  
Strong Coupling Regime ◽  
Electronic Systems ◽  
Strongly Correlated ◽  
Magnetic Systems ◽  
Strongly Correlated Electronic Systems ◽  
Gaussian Effective Potential

The Gaussian Effective Potential (GEP) is shown to be a useful variational tool for the study of the magnetic properties of strongly correlated electronic systems. The GEP is derived for a single band Hubbard model on a two-dimensional bi-partite square lattice in the strong coupling regime. At half-filling the antiferromagnetic order parameter emerges as the minimum of the effective potential with an accuracy which improves over RPA calculations and is very close to that achieved by Monte Carlo simulations. Extensions to other magnetic systems are discussed.

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