scholarly journals On the cosmological constant: its identification as renormalization group invariant scale corresponding to a gravitational condensate

2016 ◽  
Author(s):  
Reiko Toriumi ◽  
Herbert Hamber
Keyword(s):  
Renormalization Group ◽  
Cosmological Constant ◽  
Group Invariant

RENORMALIZATION GROUP AND WORMHOLES

1992 ◽  
Vol 01 (02) ◽  
pp. 401-405 ◽  
Author(s):  
S.D. ODINTSOV ◽  
J. PEREZ-MERCADER
Keyword(s):  
Renormalization Group ◽  
Cosmological Constant ◽  
Curved Spacetime ◽  
Curved Space

We incorporate the curved spacetime renormalization group into Coleman’s analysis of cosmological constant vanishing in the framework of wormholes. It is shown that for asymptotically free or finite GUT’s in curved space, Coleman’s mechanism can be realized.

scholarly journals The Kaon B-parameter in quenched QCD

2006 ◽  
Vol 21 (04) ◽  
pp. 865-868
Author(s):  
◽  
STEFAN SINT
Keyword(s):  
Renormalization Group ◽  
Lattice Qcd ◽  
Systematic Errors ◽  
Group Invariant ◽  
Invariant Parameter

I report on a recent determination by the ALPHA collaboration of the kaon B-parameter using lattice QCD with Wilson type quarks. An effort is made to control all systematic errors except for the quenched approximation. The preliminary result for the renormalization group invariant parameter is [Formula: see text], which translates to [Formula: see text] in the [Formula: see text] scheme with anticommuting γ5.

scholarly journals TIME VARIABLE COSMOLOGICAL CONSTANT FROM RENORMALIZATION GROUP EQUATIONS

2010 ◽  
Vol 25 (05) ◽  
pp. 377-388 ◽  
Author(s):  
LIXIN XU
Keyword(s):  
Renormalization Group ◽  
Cosmological Constant ◽  
Dark Energy Model ◽  
Cosmological Parameters ◽  
Time Variable ◽  
Observational Constraints ◽  
Effective Equation ◽  
Variable Cosmological Constant ◽  
Dimensionless Energy ◽  
Renormalization Group Equations

In this paper, a time variable cosmological constant (CC) from renormalization group equations (RGEs) is explored, where the renormalization scales μ2 = Ḣ + 2H2 and μ2 = - Ḣ are taken respectively. The cosmological parameters, such as dimensionless energy density, deceleration parameter and effective equation of state of CC etc., are derived. Also, the cosmic observational constraints are implemented to test the model's consistency. The results show that it is compatible with cosmic data. So, it would be a viable dark energy model.

ASYMPTOTIC BEHAVIOR OF MASSIVE Φ4 THEORY

1996 ◽  
Vol 11 (31) ◽  
pp. 2503-2509 ◽  
Author(s):  
HEMYAN A. AL-KUWARI ◽  
M.O. TAHA
Keyword(s):  
Asymptotic Behavior ◽  
Renormalization Group ◽  
Effective Potential ◽  
Asymptotic Formulas ◽  
Group Invariant

We construct renormalization group invariant forms of the effective potential of massive Φ4 theory that yield its asymptotic behavior for large and small values of the field and mass variables. Some consequences of these asymptotic formulas are discussed.

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