Zobrazeno 1 - 10
of 112
pro vyhledávání: '"Semenoff, G. W."'
The Hall and longitudinal conductivities of a recently studied holographic model of a quantum Hall ferromagnet are computed using the Karch-O'Bannon technique. In addition, the low temperature entropy of the model is determined. The holographic model
Externí odkaz:
http://arxiv.org/abs/1408.3320
A detailed numerical study of a recent proposal for exotic states of the D3-probe D5 brane system with charge density and an external magnetic field is presented. The state has a large number of coincident D5 branes blowing up to a D7 brane in the pr
Externí odkaz:
http://arxiv.org/abs/1311.6999
Autor:
Araki, Y., Semenoff, G. W.
Publikováno v:
Phys. Rev. B 86, 121402 (2012)
A variational technique is used to study sublattice symmetry breaking by strong on-site and nearest neighbor interactions in graphene. When interactions are strong enough to break sublattice symmetry, and with relative strengths characteristic of gra
Externí odkaz:
http://arxiv.org/abs/1204.4531
The electronic properties of a particular class of domain walls in gapped graphene are investigated. We show that they can support mid-gap states which are localized in the vicinity of the domain wall and propagate along its length. With a finite den
Externí odkaz:
http://arxiv.org/abs/0806.0094
Publikováno v:
AnnalsPhys.321:2849-2875,2006
We revisit the exact solution of the two space-time dimensional quantum field theory of a free massless boson with a periodic boundary interaction and self-dual period. We analyze the model by using a mapping to free fermions with a boundary mass ter
Externí odkaz:
http://arxiv.org/abs/hep-th/0512219
Publikováno v:
JHEP0411:053,2004
We study non planar corrections to the spectrum of operators in the ${\mathcal N}=2$ supersymmetric Yang Mills theory which are dual to string states in the maximally supersymmetric pp-wave background with a {\em compact} light-cone direction. The ex
Externí odkaz:
http://arxiv.org/abs/hep-th/0409315
A certain sector of the matrix model for M-theory on a plane wave background has recently been shown to produce the transverse five-brane. We consider this theory at finite temperature. We find that, at a critical temperature it has a Gross-Witten ph
Externí odkaz:
http://arxiv.org/abs/hep-th/0310286
Publikováno v:
Nucl.Phys.B650:125-161,2003
Correlation functions in perturbative N=4 supersymmetric Yang-Mills theory are examined in the Berenstein-Maldacena-Nastase (BMN) limit. We demonstrate that non-extremal four-point functions of chiral primary fields are ill-defined in that limit. Thi
Externí odkaz:
http://arxiv.org/abs/hep-th/0208178
Publikováno v:
Phys.Lett. B543 (2002) 127-134
We consider the problem of condensation of open string tachyon fields which have an O(D) symmetric profile. This problem is described by a boundary conformal field theory with D scalar fields on a disc perturbed by relevant boundary operators with O(
Externí odkaz:
http://arxiv.org/abs/hep-th/0206025