Translational Symmetry Breaking Transformations in the Small Polaron Theory

1980 ◽  
Vol 22 (3) ◽  
pp. 314-318 ◽  
Author(s):  
P Gosar
2021 ◽  
Vol 2021 (7) ◽  
Author(s):  
Andrey Yu. Kotov ◽  
Daniel Nogradi ◽  
Kalman K. Szabo ◽  
Lorinc Szikszai

Abstract In previous work, [arXiv:1905.01909], we have calculated the mϱ/fπ ratio in the chiral and continuum limit for SU(3) gauge theory coupled to Nf = 2, 3, 4, 5, 6 fermions in the fundamental representation. The main result was that this ratio displays no statistically significant Nf-dependence. In the present work we continue the study of the Nf-dependence by extending the simulations to Nf = 7, 8, 9, 10. Along the way we also study in detail the Nf-dependence of finite volume effects on low energy observables and a particular translational symmetry breaking unphysical, lattice artefact phase specific to staggered fermions.


1982 ◽  
Vol 26 (2) ◽  
pp. 567-590 ◽  
Author(s):  
K. W. Kehr ◽  
D. Richter ◽  
J. -M. Welter ◽  
O. Hartmann ◽  
E. Karlsson ◽  
...  

2011 ◽  
Vol 107 (25) ◽  
Author(s):  
Chia-Hui Lin ◽  
Tom Berlijn ◽  
Limin Wang ◽  
Chi-Cheng Lee ◽  
Wei-Guo Yin ◽  
...  

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Taeyoon Moon ◽  
Phillial Oh

We explore the possibility of the spontaneous symmetry breaking in 5D conformally invariant gravity, whose action consists of a scalar field nonminimally coupled to the curvature with its potential. Performing dimensional reduction via ADM decomposition, we find that the model allows an exact solution giving rise to the 4D Minkowski vacuum. Exploiting the conformal invariance with Gaussian warp factor, we show that it also admits a solution which implements the spontaneous breaking of conformal symmetry. We investigate its stability by performing the tensor perturbation and find the resulting system is described by the conformal quantum mechanics. Possible applications to the spontaneous symmetry breaking of time-translational symmetry along the dynamical fifth direction and the brane-world scenario are discussed.


1999 ◽  
Vol 13 (29n31) ◽  
pp. 3582-3584
Author(s):  
MARCO ZOLI

The theory of polarons has experienced a surge of activity in the last years partly due to the possible role of polaronic quasiparticles in high Tc superconductors. This numerical study of the Holstein model shows that the polaronic effective masses become essentially dimension independent and of order ≃10–50 times the electron mass at sufficiently strong intermolecular coupling forces. Such values (which are much lower than those obtained by traditional small polaron theory) would erase one the serious objections against a (bi)polaronic picture for high Tc superconductors.


2000 ◽  
Vol 10 (5) ◽  
pp. 569-601 ◽  
Author(s):  
V. G. LeBlanc ◽  
C. Wulff

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