Critical phenomena in chiral symmetry breakdown of micromagnetic configurations in a nanostructured ferromagnetic ring

2005 ◽  
Vol 71 (17) ◽  
Author(s):  
E. Saitoh ◽  
K. Harii ◽  
H. Miyajima ◽  
T. Yamaoka ◽  
S. Okuma
1980 ◽  
Vol 45 (2) ◽  
pp. 100-102 ◽  
Author(s):  
Sidney Coleman ◽  
Edward Witten

2007 ◽  
Vol 16 (09) ◽  
pp. 2872-2875 ◽  
Author(s):  
PEDRO VIANA ◽  
EDUARDO S. FRAGA ◽  
JOÃO R. T. DE MELO NETO

We investigate the production of disoriented chiral condensates in ultra high energy collisions and look for an intrinsic signature they could produce in ongoing and future cosmic ray experiments. This is implemented by studying the atmospheric showers generated after the chiral symmetry breakdown. We also speculate on the nature of the events and its connection with Centauro and anti-Centauro observations. Some preliminary results are presented.


2012 ◽  
Vol 27 (09) ◽  
pp. 1230011 ◽  
Author(s):  
JOHN M. CORNWALL

We review the role of zero-temperature entropy in several closely-related contexts in QCD. The first is entropy associated with disordered condensates, including [Formula: see text]. The second is effective vacuum entropy arising from QCD solitons such as center vortices, yielding confinement and chiral symmetry breaking. The third is entanglement entropy, which is entropy associated with a pure state, such as the QCD vacuum, when the state is partially unobserved and unknown. Typically, entanglement entropy of an unobserved three-volume scales not with the volume but with the area of its bounding surface. The fourth manifestation of entropy in QCD is the configurational entropy of light-particle world-lines and flux tubes; we argue that this entropy is critical for understanding how confinement produces chiral symmetry breakdown, as manifested by a dynamically-massive quark, a massless pion, and a [Formula: see text] condensate.


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