Zobrazeno 1 - 10
of 107
pro vyhledávání: '"Karrasch, Christoph"'
Autor:
He, Yuchi, Rausch, Roman, Peschke, Matthias, Karrasch, Christoph, Corboz, Philippe, Bultinck, Nick, Parameswaran, S. A.
We use unrestricted Hartree-Fock, density matrix renormalization group, and variational projected entangled pair state calculations to investigate the ground state phase diagram of the triangular lattice Hubbard model at "half doping" relative to sin
Externí odkaz:
http://arxiv.org/abs/2311.10146
Publikováno v:
PhysRevLett.132.136501(2024)
Interacting fermionic ladders are important platforms to study quantum phases of matter, such as different types of Mott insulators. In particular, the D-Mott and S-Mott states hold pre-formed fermion pairs and become paired-fermion liquids upon dopi
Externí odkaz:
http://arxiv.org/abs/2302.14085
Publikováno v:
Phys. Rev. Research 5, 023015 (2023)
We investigate the nonequilibrium dynamics of the $S=1$ quantum spin chain subjected to a time-dependent external drive, where the driving frequency is adiabatically decreased as a function of time (``Floquet adiabatic evolution''). We show that when
Externí odkaz:
http://arxiv.org/abs/2210.16088
Publikováno v:
Nature Commununications 14, 5847 (2023)
When a generic quantum system is prepared in a simple initial condition, it typically equilibrates toward a state that can be described by a thermal ensemble. A known exception are localized systems which are non-ergodic and do not thermalize, howeve
Externí odkaz:
http://arxiv.org/abs/2210.03153
Publikováno v:
SciPost Phys. 14, 052 (2023)
The ferrimagnetic phase of the sawtooth chain with mixed ferromagnetic nearest-neighbour interactions $J$ and antiferromagnetic next-nearest-neighbour interactions $J'$ (within the isotropic Heisenberg model) was previously characterized as a phase w
Externí odkaz:
http://arxiv.org/abs/2207.08273
Publikováno v:
Phys. Rev. B 107, L100301 (2023)
A strongly interacting plasma of linearly dispersing electron and hole excitations in two spatial dimensions (2D), also known as a Dirac fluid, can be captured by relativistic hydrodynamics and shares many universal features with other quantum critic
Externí odkaz:
http://arxiv.org/abs/2202.13671
Publikováno v:
SciPost Phys. 12, 143 (2022)
We compute ground-state properties of the isotropic, antiferromagnetic Heisenberg model on the sodalite cage geometry. This is a 60-spin spherical molecule with 24 vertex-sharing tetrahedra which can be regarded as a molecular analogue of a capped ka
Externí odkaz:
http://arxiv.org/abs/2111.04549
Autor:
Eckhardt, Christian J., Passetti, Giacomo, Othman, Moustafa, Karrasch, Christoph, Cavaliere, Fabio, Sentef, Michael A., Kennes, Dante M.
Publikováno v:
Commun Phys 5, 122 (2022)
Recent experimental advances enable the manipulation of quantum matter by exploiting the quantum nature of light. However, paradigmatic exactly solvable models, such as the Dicke, Rabi or Jaynes-Cummings models for quantum-optical systems, are scarce
Externí odkaz:
http://arxiv.org/abs/2107.12236
Publikováno v:
Phys. Rev. B 106, L180201 (2022)
We study the high-energy phase diagram of a two-dimensional spin-$\frac{1}{2}$ Heisenberg model on a square lattice in the presence of either quenched or quasiperiodic disorder. The use of large-scale tensor network numerics allows us to compute the
Externí odkaz:
http://arxiv.org/abs/2106.12861
Publikováno v:
Annalen der Physik 2024, 2300436
We show that from the point of view of the generalized pairing Hamiltonian, the atomic nucleus is a system with small entanglement and can thus be described efficiently using a 1D tensor network (matrix-product state) despite the presence of long-ran
Externí odkaz:
http://arxiv.org/abs/2105.07012