منابع مشابه
Scaling and Asymptotic Scaling in the SU ( 2 ) Gauge Theory
We determine the critical couplings for the deconfinement phase transition in SU (2) gauge theory on N τ × N 3 σ lattices with N τ = 8 and 16 and N σ varying between 16 and 48. A comparison with string tension data shows scaling of the ratio T c / √ σ in the entire coupling regime β = 2.30 − 2.75, while the individual quantities still exhibit large scaling violations. We find T c / √ σ =0.69(2)...
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We discuss a gauge-invariant prescription to take the mean-field approximation selfconsistently in the PNJL model (Nambu–Jona-Lasinio model with the Polyakov loop). We first address the problem of non-vanishing color density in normal quark matter, which is an artifact arising from gauge-fixed treatment of the Polyakov loop mean-fields. We then confirm that the gauge average incorporated in our...
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We report on a high statistics simulation of SU(2) pure gauge field theory at finite temperature, using Symanzik action. We determine the critical coupling for the deconfinement phase transition on lattices up to 8× 24, using Finite Size Scaling techniques. We find that the pattern of asymptotic scaling violation is essentially the same as the one observed with conventional, not improved action...
متن کاملCasimir Scaling of domain wall tensions in the deconfined phase of D = 3 + 1 SU ( N ) gauge theories
We perform lattice calculations of the spatial ’t Hooft -string tensions, , in the deconfined phase of SU( ) gauge theories for . These equal (up to a factor of ) the surface tensions of the domain walls between the corresponding (Euclidean) deconfined phases. For our results match on to the known perturbative result, which exhibits Casimir Scaling, . At lower the coupling becomes stronger and,...
متن کاملCasimir Effect for Gauge Scalars: The Kalb-Ramond Case
In this work we calculate the functional generator of the Green’s functions of the Kalb-Ramond field in 3 + 1 dimensions. We also calculate the functional generator, and corresponding Casimir energy, of the same field when it is submitted to boundary conditions on two parallel planes. The boundary conditions we consider can be interpreted as a kind of conducting planes for the field in compeari...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2008
ISSN: 1550-7998,1550-2368
DOI: 10.1103/physrevd.78.074501