Publication:
Quantum phase transitions and spontaneous symmetry-breaking in Dicke Model

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http://dx.doi.org/10.1063/1.4810842
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Publication Date
2013
Authors
Puebla, Ricardo
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American Institute of Physics (AIP)
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Abstract
A method to find the Excited-States Quantum Phase Transitions (ESQPT's) from parity-symmetry in the Dicke model is studied and presented. This method allows us to stablish a critical energy where ESQPT's take places, and divides the whole energy spectrum in two regions with different properties.
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© 2013 AIP Publishing LLC. La Rabida 2012 International Scientific Meeting on Nuclear Physics (2012. La Rábida (España).
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Física (Física)
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22 Física
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1. R. H. Dicke, Phys. Rev. Lett. 93, 99 (1954). 2. C. Emary, and T. Brandes, Phys. Rev. Lett. 90, 044101 (2003); Phys. Rev. E 67, 066203 (2007). 3. K. Baumann, R. Mottl, F. Brennecke, and T. Esslinger, Phys. Rev. Lett. 107, 140402 (2011). 4. R. Puebla, A. Relaño and J. Retamosa, arXiv:1209.5320 (2012). 5. P. Pérez-Fernández, P. Cejnar, J. M. Arias, J. Dukelsky, J. E. García-Ramos, and A. Relaño, Phys. Rev. A 83, 033802 (2011); P. Pérez-Fernández, A. Relaño, P. Cejnar, J. M. Arias, J. Dukelsky, and J. E. García-Ramos, Phys. Rev. E 83, 046208 (2011).
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https://hdl.handle.net/20.500.14352/45632
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