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Fermi-liquid instabilities at magnetic quantum phase transitions
- H. Lohneysen, A. Rosch, M. Vojta, P. Wolfle
- Physics, Materials Science
- 13 June 2006
This review discusses instabilities of the Fermi-liquid state of conduction electrons in metals with particular emphasis on magnetic quantum critical points. Both the existing theoretical concepts…
Weak magnetism and non-Fermi liquids near heavy-fermion critical points
- T. Senthil, M. Vojta, S. Sachdev
- Physics
- 8 May 2003
This paper is concerned with the weak-moment magnetism in heavy-fermion materials and its relation to the non-Fermi liquid physics observed near the transition to the Fermi liquid. We explore the…
Fractionalized fermi liquids.
- T. Senthil, S. Sachdev, M. Vojta
- PhysicsPhysical review letters
- 5 September 2002
In spatial dimensions d>or=2, Kondo lattice models of conduction and local moment electrons can exhibit a fractionalized, nonmagnetic state (FL(*)) with a Fermi surface of sharp electronlike…
Impurity quantum phase transitions
- M. Vojta
- Physics
- 9 December 2004
Recent work is reviewed on continuous quantum phase transitions in impurity models, both with fermionic and bosonic baths – these transitions are interesting realizations of boundary critical…
Lattice symmetry breaking in cuprate superconductors: stripes, nematics, and superconductivity
- M. Vojta
- Physics
- 21 January 2009
This article gives an overview of both theoretical and experimental developments concerning states with lattice symmetry breaking in the cuprate high-temperature superconductors. Recent experiments…
Numerical renormalization group for quantum impurities in a bosonic bath
- R. Bulla, Hyunjik Lee, N. Tong, M. Vojta
- Physics
- 21 July 2004
We present a detailed description of the recently proposed numerical renormalization group method for models of quantum impurities coupled to a bosonic bath. Specifically, the method is applied to…
Numerical renormalization group for bosonic systems and application to the sub-ohmic spin-boson model.
We describe the generalization of Wilson's numerical renormalization group method to quantum impurity models with a bosonic bath, providing a general nonperturbative approach to bosonic impurity…
Phase transitions in the pseudogap Anderson and Kondo models: Critical dimensions, renormalization group, and local-moment criticality
The pseudogap Kondo problem, describing quantum impurities coupled to fermionic quasiparticles with a pseudogap density of states…
Quantum criticality in a double-quantum-dot system.
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Quantum phase transitions in models of coupled magnetic impurities
- M. Vojta, R. Bulla, W. Hofstetter
- Physics
- 22 June 2001
We discuss models of interacting magnetic impurities coupled to a metallic host, which show one or more boundary quantum phase transitions where the ground-state spin changes as a function of the…
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