Correlation Inequalities for the Quantum XY Model

Autor: Costanza Benassi, Benjamin Lees, Daniel Ueltschi

Publikováno v: Journal of Statistical Physics

We show the positivity or negativity of truncated correlation functions in the quantum XY model with spin 1/2 (at any temperature) and spin 1 (in the ground state). These Griffiths-Ginibre inequalities of the second kind generalise an earlier result

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::957cb39bb57698de68ce91a3494e183b
http://europepmc.org/articles/PMC4977339

Renormalization Group Analysis of 2+1D Quantum XY Model With Dissipation

Autor: Hou, Changtao

Publikováno v: Hou, Changtao. (2016). Renormalization Group Analysis of 2+1D Quantum XY Model With Dissipation. UC Riverside: Physics. Retrieved from: http://www.escholarship.org/uc/item/3mf1k75p

This thesis present the recently theoretical and numerical results on 2D dissipative quantum XY model. The two-dimensional quantum XY model is applicable to the quantum critical properties of several experimental systems, such as superconductor to in

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od_______325::06d78b5aa1b2b868747177c45cec6da3
http://www.escholarship.org/uc/item/3mf1k75p

Aspects hors de l'équilibre de systèmes quantiques unidimensionnels fortement corrélés

Autor: Collura, Mario

Dans cette thèse, nous avons répondu à certaines questions ouverts dans le domaine de la dynamique hors équilibre des systèmes quantiques unidimensionnels fermés. Durant ces dernières années, les avancées dans les techniques expérimentales

Externí odkaz: http://www.theses.fr/2012LORR0009/document

Efeitos de desordem ou aperiodicidade sobre o comportamento de sistemas magnéticos

Autor: Vieira, Andre de Pinho

Consideramos os efeitos de desordem ou aperiodicidade sobre três sistemas magnéticos distintos. Inicialmente, apresentamos um modelo fenomenológico para descrever a dependência térmica da magnetização remanente induzida por diluição numa cla

Externí odkaz: http://www.teses.usp.br/teses/disponiveis/43/43134/tde-23022012-155648/

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