scholarly journals Criticality of the Higgs mass for the long-range quantum XY chain: Amplitude ratio between the Higgs and paramagnetic gaps

2019 ◽  
Vol 527 ◽  
pp. 121395
Author(s):  
Yoshihiro Nishiyama
Keyword(s):  
Long Range ◽  
Higgs Mass ◽  
Amplitude Ratio ◽  
Xy Chain

scholarly journals Quantum criticality and excitations of a long-range anisotropic XY chain in a transverse field

2020 ◽  
Vol 102 (17) ◽  
Author(s):  
Patrick Adelhardt ◽  
Jan Alexander Koziol ◽  
Andreas Schellenberger ◽  
Kai Phillip Schmidt
Keyword(s):  
Long Range ◽  
Transverse Field ◽  
Quantum Criticality ◽  
Xy Chain

scholarly journals Study of the XY chain with long-range interactions

2008 ◽  
Vol 57 (9) ◽  
pp. 5944
Author(s):  
Li Jia-Liang ◽  
Lei Shu-Guo
Keyword(s):  
Long Range ◽  
Long Range Interactions ◽  
Xy Chain

MONTE CARLO METHOD FOR SPIN MODELS WITH LONG-RANGE INTERACTIONS

1995 ◽  
Vol 06 (03) ◽  
pp. 359-370 ◽  
Author(s):  
ERIK LUIJTEN ◽  
HENK W.J. BLÖTE
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Method ◽  
Long Range ◽  
Amplitude Ratio ◽  
Mean Field ◽  
Finite Size ◽  
System Size ◽  
Spin Models ◽  
Dimensionless Amplitude ◽  
Long Range Interactions

We introduce a Monte Carlo method for the simulation of spin models with ferromagnetic long-range interactions in which the amount of time per spin-flip operation is independent of the system size, in spite of the fact that the interactions between each spin and all other spins are taken into account. We work out two algorithms for the q-state Potts model and discuss the generalization to systems with other interactions and to O (n) models. We illustrate the method with a simulation of the mean-field Ising model, for which we have also analytically calculated the leading finite-size correction to the dimensionless amplitude ratio <m2>2/<m4> at the critical temperature.

Hit and False-Alarm Rates of Selected ABR Indices in Differentiating Cochlear Disorders From Acoustic Tumors

1996 ◽  
Vol 5 (1) ◽  
pp. 90-96 ◽  
Author(s):  
Frank E. Musiek ◽  
Cynthia A. McCormick ◽  
Raymond M. Hurley
Keyword(s):  
False Alarm ◽  
Amplitude Ratio ◽  
High Specificity ◽  
Auditory Brainstem ◽  
Latency Difference ◽  
Cochlear Pathology ◽  
Brainstem Response ◽  
Absolute Latency ◽  
Two Indices ◽  
Low Sensitivity

We performed a retrospective study of 26 patients with acoustic tumors and 26 patients with otologically diagnosed cochlear pathology to determine the sensitivity (hit rate), specificity (false-alarm rate), and efficiency of six auditory brainstem response indices. In addition, a utility value was determined for each of these six indices. The I–V interwave interval, the interaural latency difference, and the absolute latency of wave V provided the highest hit rates, the best A’ values and good utility. The V/I amplitude ratio index provided high specificity but low sensitivity scores. In regard to sensitivity and specificity, using the combination of two indices provided little overall improvement over the best one-index measures.

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