scholarly journals Gauge-invariant proper self-energies and vertices in gauge theories with broken symmetry

1990 ◽  
Vol 41 (10) ◽  
pp. 3179-3191 ◽  
Author(s):  
Joannis Papavassiliou
Keyword(s):  
Gauge Theories ◽  
Broken Symmetry ◽  
Gauge Invariant

scholarly journals Gauge-invariant quantum circuits for U (1) and Yang-Mills lattice gauge theories

2021 ◽  
Vol 3 (4) ◽  
Author(s):  
Giulia Mazzola ◽  
Simon V. Mathis ◽  
Guglielmo Mazzola ◽  
Ivano Tavernelli
Keyword(s):  
Gauge Theories ◽  
Quantum Circuits ◽  
Gauge Invariant ◽  
Yang Mills ◽  
Lattice Gauge ◽  
Lattice Gauge Theories ◽  
Invariant Quantum

MASSIVE AXIAL GAUGE IN THE EXACT RENORMALIZATION GROUP APPROACH

2001 ◽  
Vol 16 (11) ◽  
pp. 2101-2104 ◽  
Author(s):  
P. PANZA ◽  
R. SOLDATI
Keyword(s):  
Renormalization Group ◽  
Wilson Loop ◽  
Gauge Theories ◽  
Massless Limit ◽  
Group Approach ◽  
Gauge Invariant ◽  
Axial Gauge ◽  
Renormalization Group Approach ◽  
Exact Renormalization Group

The Exact Renormalization Group (ERG) approach to massive gauge theories in the axial gauge is studied and the smoothness of the massless limit is analysed for a formally gauge invariant quantity such as the Euclidean Wilson loop.

scholarly journals MODIFIED PARTITION FUNCTIONS, CONSISTENT ANOMALIES AND CONSISTENT SCHWINGER TERMS

2011 ◽  
Vol 08 (08) ◽  
pp. 1747-1762 ◽  
Author(s):  
AMIR ABBASS VARSHOVI
Keyword(s):  
Partition Function ◽  
Gauge Theories ◽  
Partition Functions ◽  
Gauge Invariant

A gauge invariant partition function is defined for gauge theories which leads to the standard quantization. It is shown that the descent equations and consequently the consistent anomalies and Schwinger terms can be extracted from this modified partition function naturally.

scholarly journals GENERATING FUNCTIONAL FOR GAUGE INVARIANT ACTIONS: EXAMPLES OF NONRELATIVISTIC GAUGE THEORIES

2010 ◽  
Vol 25 (10) ◽  
pp. 2087-2101 ◽  
Author(s):  
OLEG ANDREEV
Keyword(s):  
Field Strength ◽  
Electric Field ◽  
Electric Field Strength ◽  
Upper Bound ◽  
Gauge Theories ◽  
Gauge Invariant ◽  
Generating Functional

We propose a generating functional for nonrelativistic gauge invariant actions. In particular, we consider actions without the usual magnetic term. Like in the Born–Infeld theory, there is an upper bound to the electric field strength in these gauge theories.

A CALCULATION OF THE MAGNETIC MOMENT OF THE Δ++

1993 ◽  
Vol 08 (34) ◽  
pp. 3283-3290
Author(s):  
MILTON DEAN SLAUGHTER
Keyword(s):  
Quark Model ◽  
Magnetic Moment ◽  
Broken Symmetry ◽  
Flavor Symmetry ◽  
Perturbative Calculation ◽  
Gauge Invariant ◽  
Equal Time ◽  
Asymptotic Level ◽  
Equal Time Commutation ◽  
Static Quark

A fully relativistic, gauge-invariant, and non-perturbative calculation of the Δ++ magnetic moment, μΔ++, is made using equal-time commutation relations (ETCRs) and the dynamical concepts of asymptotic SU F(2) flavor symmetry and asymptotic level realization. Physical masses of the Δ and nucleon are used in this broken symmetry calculation. It is found that μΔ++=2.04μp, where μp is the proton magnetic moment. This result is very similar to that obtained by using SU(6) ⊗ O(3) symmetry or the static quark model.

Gauge-invariant and covariant operators in gauge theories

1990 ◽  
Vol 29 (7) ◽  
pp. 789-804 ◽  
Author(s):  
Giovanni Giachetta ◽  
Luigi Mangiarotti
Keyword(s):  
Gauge Theories ◽  
Gauge Invariant

To Restore the Broken Symmetry in the Nonconfining Schwinger Model

1997 ◽  
Vol 12 (31) ◽  
pp. 5625-5637 ◽  
Author(s):  
Anisur Rahaman
Keyword(s):  
Phase Space ◽  
Gauge Symmetry ◽  
Effective Action ◽  
Invariant Theory ◽  
Broken Symmetry ◽  
Quantum Mechanical ◽  
Gauge Invariant ◽  
Schwinger Model ◽  
Proper Extension

A new generalization of the vector Schwinger model is considered where gauge symmetry is broken at the quantum mechanical level. By proper extension of the phase space this broken symmetry has been restored in two different ways. One of these two leads to a BRST-invariant effective action. An equivalent gauge-invariant theory is reformulated even in the usual phase space also.

NON-PERTURBAITVE GREEN FUNCTIONS IN QUANTUM GAUGE THEORIES

1991 ◽  
Vol 06 (10) ◽  
pp. 909-921 ◽  
Author(s):  
S.V. SHABANOV
Keyword(s):  
Configuration Space ◽  
Gauge Theories ◽  
Gauge Condition ◽  
Green Functions ◽  
Spatial Infinity ◽  
Gauge Invariant ◽  
Yang Mills ◽  
Global Gauge

Non-perturbative Green functions for gauge invariant variables are considered. The Green functions are found to be modified as compared with the usual ones in a definite gauge because of a physical configuration space (PCS) reduction. In the Yang-Mills theory with fermions, this phenomenon follows from the Singer theorem about the absence of a global gauge condition for the fields tending to zero at spatial infinity.

scholarly journals Gauge Invariance and Mass Gap in (2+1)-Dimensional Yang–Mills Theory

1997 ◽  
Vol 12 (06) ◽  
pp. 1161-1171 ◽  
Author(s):  
Dimitra Karabali ◽  
V. P. Nair
Keyword(s):  
Gauge Invariance ◽  
Gauge Theories ◽  
Abelian Gauge ◽  
Gauge Invariant ◽  
Yang Mills ◽  
Mass Gap ◽  
Spatial Dimensions

In terms of a gauge-invariant matrix parametrization of the fields, we give an analysis of how the mass gap could arise in non-Abelian gauge theories in two spatial dimensions.

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