منابع مشابه
Competing Orders and Anomalies
A conservation law is one of the most fundamental properties in nature, but a certain class of conservation "laws" could be spoiled by intrinsic quantum mechanical effects, so-called quantum anomalies. Profound properties of the anomalies have deepened our understanding in quantum many body systems. Here, we investigate quantum anomaly effects in quantum phase transitions between competing orde...
متن کاملQuantum quenches and competing orders
Abstract We study the non-equlibrium dynamics of an electronic model of competition between an unconventional charge density wave (a bond density wave) and d-wave superconductivity. In a time-dependent HartreeFock+BCS approximation, the dynamics reduces to the equations of motion of operators realizing the generators of SU(4) at each pair of momenta, (k, k), in the Brillouin zone. We also study...
متن کاملCompeting orders in FeAs layers.
Using the unrestricted Hartree-Fock approximation and Landau theory we identify possible phases competing with superconductivity in FeAs layers. We find that close to half-filling the transition from the paramagnet to the magnetically ordered phase is first order, making anharmonicities relevant and leading to a rich phase diagram. Between the already known one-dimensionally modulated magnetic ...
متن کاملAlgebraic spin liquid as the mother of many competing orders
Michael Hermele,1 T. Senthil,2,3 and Matthew P. A. Fisher4 1Department of Physics, University of California, Santa Barbara, California 93106, USA 2Center for Condensed Matter Theory, Indian Institute of Science, Bangalore 560012, India 3Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA 4Kavli Institute for Theoretical Physics, University of Califo...
متن کاملQuantum spin nanotubes--frustration, competing orders and criticalities.
Recent developments of theoretical studies on spin nanotubes are reviewed, especially focusing on the S = 1/2 three-leg spin tube. In contrast to the three-leg spin ladder, the tube has a spin gap in the case of the regular-triangle unit cell when the rung interaction is sufficiently large. The effective theory based on the Hubbard Hamiltonian indicates a quantum phase transition to a gapless s...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of High Energy Physics
سال: 2010
ISSN: 1029-8479
DOI: 10.1007/jhep10(2010)092