Zobrazeno 1 - 10
of 39
pro vyhledávání: '"Huerga, Daniel"'
The Kitaev spin liquid, stabilized as the ground state of the Kitaev honeycomb model, is a paradigmatic example of a topological $\mathbb{Z}_2$ quantum spin liquid. The fate of the Kitaev spin liquid in presence of an external magnetic field is a top
Externí odkaz:
http://arxiv.org/abs/2311.03334
Autor:
Huerga, Daniel
Publikováno v:
Quantum 6, 874 (2022)
We introduce a hybrid quantum-classical variational algorithm to simulate ground-state phase diagrams of frustrated quantum spin models in the thermodynamic limit. The method is based on a cluster-Gutzwiller ansatz where the wave function of the clus
Externí odkaz:
http://arxiv.org/abs/2201.02545
Autor:
Céleri, Lucas C., Huerga, Daniel, Albarrán-Arriagada, Francisco, Solano, Enrique, de Andoin, Mikel Garcia, Sanz, Mikel
Publikováno v:
Phys. Rev. Applied 19, 064086 (2023)
Simulating quantum many-body systems is a highly demanding task since the required resources grow exponentially with the dimension of the system. In the case of fermionic systems, this is even harder since nonlocal interactions emerge due to the anti
Externí odkaz:
http://arxiv.org/abs/2103.15689
Publikováno v:
Quantum 7, 895 (2023)
We propose a protocol to encode classical bits in the measurement statistics of many-body Pauli observables, leveraging quantum correlations for a random access code. Measurement contexts built with these observables yield outcomes with intrinsic red
Externí odkaz:
http://arxiv.org/abs/2103.01204
Akademický článek
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Publikováno v:
Phys. Rev. Lett. 118, 167202 (2017)
We present a general method to construct translation-invariant and SU(2) symmetric antiferromagnetic parent Hamiltonians of valence bond crystals (VBC). The method is based on a canonical mapping transforming S=1/2 spin operators into a bilinear form
Externí odkaz:
http://arxiv.org/abs/1611.07893
Publikováno v:
Phys. Rev. B 94, 165124 (2016)
We study the quantum phase diagram of a system of hard-core bosons on the Kagome lattice with nearest-neighbor repulsive interactions, for arbitrary densities, by means of the hierarchical mean field theory and exact diagonalization techniques. This
Externí odkaz:
http://arxiv.org/abs/1607.07381
Publikováno v:
Phys. Rev. B 92, 115120 (2015)
Raman-assisted hopping can allow for the creation of density-dependent synthetic magnetism for cold neutral gases in optical lattices. We show that the density-dependent fields lead to a non-trivial interplay between density modulations and chirality
Externí odkaz:
http://arxiv.org/abs/1502.07944
Autor:
Zhao, Jinmo, Jimenez-Hoyos, Carlos A., Scuseria, Gustavo E., Huerga, Daniel, Dukelsky, Jorge., Rombouts, Stefan. M. A., Ortiz, Gerardo
Publikováno v:
J. Phys.: Condens. Matt. 26, 455601 (2014)
We present a mapping of elementary fermion operators onto a quadratic form of composite fermionic and bosonic operators. The mapping is an exact isomorphism as long as the physical constraint of one composite particle per cluster is satisfied. This c
Externí odkaz:
http://arxiv.org/abs/1408.1014
Publikováno v:
Phys. Rev. B 89, 094401 (2014)
We study the zero temperature phase diagram of two-dimensional hard-core bosons on a square lattice with nearest neighbour and plaquette (ring-exchange) hoppings, at arbitrary densities, by means of a hierarchical mean-field theory. In the frustrated
Externí odkaz:
http://arxiv.org/abs/1312.0419