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Signatures of an electronic nematic phase at the isotropic-nematic phase transition
The electronic nematic phase occurs when the point-group symmetry of the lattice structure is broken, due to electron-electron interactions. We study a model for the nematic phase on a square latticeExpand
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Nonequilibrium transport at a dissipative quantum phase transition.
We investigate the nonequilibrium transport near a quantum phase transition in a generic and relatively simple model, the dissipative resonant level model, that has many applications for nanosystems.Expand
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Kondo effect in coupled quantum dots with RKKY interaction: Effects of finite temperature and magnetic field
We study transport through two quantum dots coupled by a Ruderman-Kittel-Kasuya-Yoshida interaction as a function of temperature and magnetic field. By applying the numerical renormalization groupExpand
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Planar pyrochlore antiferromagnet: A large-N analysis
We study possible quantum phases of the Heisenberg antiferromagnet on the planar pyrochlore lattice, also known as the checkerboard lattice or the square lattice with crossings. It is assumed thatExpand
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Quantum phase transitions in a resonant-level model with dissipation: Renormalization-group studies
We study a spinless level that hybridizes with a fermionic band and is also coupled via its charge to a dissipative bosonic bath. We consider the general case of a power-law hybridization function rExpand
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Strain-induced superconducting pair density wave states in graphene
Graphene is known to be non-superconducting. However, surprising superconductivity is recently discovered in a flat-band in a twisted bi-layer graphene. Here we show that superconductivity can beExpand
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Formation of an electronic nematic phase in interacting fermion systems
We study the formation of an electronic nematic phase characterized by a broken point-group symmetry in interacting fermion systems within the weak coupling theory. As a function of interactionExpand
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Nonequilibrium quantum transport through a dissipative resonant level
The resonant-level model represents a paradigmatic quantum system which serves as a basis for many other quantum impurity models. We provide a comprehensive analysis of the nonequilibrium transportExpand
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Quantum phases of the Shastry-Sutherland antiferromagnet: Application to SrCu 2 ( BO 3 ) 2
We study possible paramagnetic phases of antiferromagnets on the Shastry-Sutherland lattice by a gauge-theoretic analysis of fluctuations in a theory with $\mathrm{Sp}(2N)$ symmetry. In addition toExpand
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Tunable Fano-Kondo resonance in side-coupled double quantum dot systems
We study the interference between the Fano and Kondo effects in a side-coupled double quantum dot system where one of the quantum dots couples to conduction-electron bath while the other dot onlyExpand
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