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- Hungarian Academy of SciencesHU468 papers
- HUN-REN Wigner Research Centre for PhysicsHU419 papers
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- University of SzegedHU128 papers
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- The University of TokyoJP75 papers
- Centre National de la Recherche ScientifiqueFR47 papers
- École Polytechnique Fédérale de LausanneCH42 papers
- Max Planck Institute for the Physics of Complex SystemsDE30 papers
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13 papers · 1 filter
Enhanced Electron-Phonon Coupling and its Irrelevance to High T Superconductivity
T. P. Devereaux, A. Virosztek, A. Zawadowski +10
It is argued that the origin of the buckling of the CuO planes in certain cuprates as well as the strong electron-phonon coupling of the phonon is due to the electri…
Boundary critical behaviour of two-dimensional random Ising models
F. Igloi, P. Lajko, W. Selke +1
Using Monte Carlo techniques and a star-triangle transformation, Ising models with random, 'strong' and 'weak', nearest-neighbour ferromagnetic couplings on a square lattice with a…
Quasi-particle excitations and dynamical structure function of trapped Bose-condensates in the WKB approximation
András Csordás, Robert Graham, Péter Szépfalusy
The Bogoliubov equations of the quasi-particle excitations in a weakly interacting trapped Bose-condensate are solved in the WKB approximation in an isotropic harmonic trap, determ…
Density Profiles, Casimir Amplitudes and Critical Exponents in the Two Dimensional Potts Model: A Density Matrix Renormalization Study
Enrico Carlon, Ferenc Igloi
We use the density matrix renormalization group (DMRG) to perform a detailed study of the critical properties of the two dimensional Q state Potts model, including the magnetizatio…
The Random Transverse Ising Spin Chain and Random Walks
F. Igloi, H. Rieger
We study the critical and off-critical (Griffiths-McCoy) regions of the random transverse-field Ising spin chain by analytical and numerical methods and by phenomenological scaling…
Exact Renormalization-Group Study of Aperiodic Ising Quantum Chains and Directed Walks
F. Igloi, L. Turban, D. Karevski +1
We consider the Ising model and the directed walk on two-dimensional layered lattices and show that the two problems are inherently related: The zero-field thermodynamical properti…