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Dive into the research topics where Raul A. Santos is active.

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Featured researches published by Raul A. Santos.


EPL | 2012

Entanglement spectra of the q-deformed Affleck-Kennedy-Lieb-Tasaki model and matrix product states

Raul A. Santos; Francis N. C. Paraan; Vladimir E. Korepin; Andreas Klümper

We exactly calculate the reduced density matrix of matrix product states (MPS). Our compact result enables one to perform analytic studies of entanglement in MPS. In particular, we consider the MPS ground states of two anisotropic spin chains. One is a q-deformed Affleck-Kennedy-Lieb-Tasaki (AKLT) model and the other is a general spin-1 quantum antiferromagnet with nearest-neighbor interactions. Our analysis shows how anisotropy affects entanglement on different continuous parameter manifolds. We also construct an effective boundary spin model that describes a block of spins in the ground state of the q-deformed AKLT Hamiltonian. The temperature of this effective model is given in terms of the deformation parameter q.


Physical Review B | 2016

Energy transport in the Anderson insulator

D. B. Gutman; I. V. Protopopov; A. L. Burin; I. V. Gornyi; Raul A. Santos; A. D. Mirlin

We study the heat conductivity in Anderson insulators in the presence of power-law interaction. Particle-hole excitations built on localized electron states are viewed as two-level systems randomly distributed in space and energy and coupled due to electron-electron interaction. A small fraction of these states form resonant pairs that in turn build a complex network allowing for energy propagation. We identify the character of energy transport through this network and evaluate the thermal conductivity. For physically relevant cases of 2D and 3D spin systems with


Journal of Physics A | 2012

Entanglement of disjoint blocks in the one-dimensional spin-1 VBS

Raul A. Santos; Vladimir E. Korepin

1/r^3


Journal of Physics A | 2012

Entanglement spectra of q-deformed higher spin VBS states

Raul A. Santos; Francis N. C. Paraan; Vladimir E. Korepin; Andreas Klümper

dipole-dipole interaction (originating from the conventional


Physical Review B | 2016

Phase diagram of two interacting helical states

Raul A. Santos; D. B. Gutman; Sam T. Carr

1/r


Physical Review B | 2015

Fractional topological insulators: From sliding Luttinger liquids to Chern-Simons theory

Raul A. Santos; Chia-Wei Huang; Yuval Gefen; D. B. Gutman

Coulomb interaction between electrons), the found thermal conductivity


Physical Review B | 2015

Interaction-protected topological insulators with time reversal symmetry

Raul A. Santos; D. B. Gutman

\kappa


Quantum Information Processing | 2016

Negativity in the generalized Valence Bond Solid state

Raul A. Santos; Vladimir E. Korepin

scales with temperature as


Protein Science | 2017

Interaction induced topological protection in one-dimensional conductors

Nikolaos Kainaris; Raul A. Santos; D. B. Gutman; Sam T. Carr

\kappa\propto T^3


Physical Review B | 2013

Bulk-edge correspondence of entanglement spectrum in two-dimensional spin ground states

Raul A. Santos

and

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Francis N. C. Paraan

University of the Philippines Diliman

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Andreas Klümper

Technical University of Dortmund

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A. D. Mirlin

Karlsruhe Institute of Technology

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I. V. Protopopov

Karlsruhe Institute of Technology

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Nikolaos Kainaris

Karlsruhe Institute of Technology

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Rex Lundgren

University of Texas at Austin

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Yuval Gefen

Weizmann Institute of Science

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