Zobrazeno 1 - 10
of 131
pro vyhledávání: '"Vanderstraeten, Laurens"'
We present a scheme to realize a topological superconducting system supporting Majorana zero modes, within a number-conserving framework suitable for optical-lattice experiments. Our approach builds on the engineering of pair-hopping processes on a l
Externí odkaz:
http://arxiv.org/abs/2412.14886
Autor:
Fedorovich, Gleb, Devos, Lukas, Haegeman, Jutho, Vanderstraeten, Laurens, Verstraete, Frank, Ueda, Atsushi
An efficient algorithm is constructed for contracting two-dimensional tensor networks under periodic boundary conditions. The central ingredient is a novel renormalization step that scales linearly with system size, i.e. from $L \to L+1$. The numeric
Externí odkaz:
http://arxiv.org/abs/2411.12731
Autor:
Capponi, Sylvain, Devos, Lukas, Lecheminant, Philippe, Totsuka, Keisuke, Vanderstraeten, Laurens
Publikováno v:
Phys. Rev. B 111, L020404 (2025)
We investigate the nature of the quantum phase transition in modulated SU(N) Heisenberg spin chains. In the odd-N case, the transition separates a trivial non-degenerate phase to a doubly-degenerate gapped chiral PSU(N) symmetry-protected topological
Externí odkaz:
http://arxiv.org/abs/2409.01019
Autor:
Vashisht, Amit, Amelio, Ivan, Vanderstraeten, Laurens, Bruun, Georg M., Diessel, Oriana K., Goldman, Nathan
Immersing a mobile impurity in a quantum many-body environment can reveal fundamental properties of the background medium, hence providing a powerful probe of quantum matter. This approach is particularly intriguing when considering media with exotic
Externí odkaz:
http://arxiv.org/abs/2407.19093
Autor:
Mortier, Quinten, Devos, Lukas, Burgelman, Lander, Vanhecke, Bram, Bultinck, Nick, Verstraete, Frank, Haegeman, Jutho, Vanderstraeten, Laurens
Publikováno v:
SciPost Phys. 18, 012 (2025)
We show how fermionic statistics can be naturally incorporated in tensor networks on arbitrary graphs through the use of graded Hilbert spaces. This formalism allows to use tensor network methods for fermionic lattice systems in a local way, avoiding
Externí odkaz:
http://arxiv.org/abs/2404.14611
Autor:
Tu, Wei-Lin, Vanderstraeten, Laurens, Schuch, Norbert, Lee, Hyun-Yong, Kawashima, Naoki, Chen, Ji-Yao
Publikováno v:
PRX Quantum 5, 010335 (2024)
Diagrammatic summation is a common bottleneck in modern applications of projected entangled-pair states, especially in computing low-energy excitations of a two-dimensional quantum many-body system. To solve this problem, here we extend the generatin
Externí odkaz:
http://arxiv.org/abs/2307.08083
Autor:
Xu, Yi, Capponi, Sylvain, Chen, Ji-Yao, Vanderstraeten, Laurens, Hasik, Juraj, Nevidomskyy, Andriy H., Mambrini, Matthieu, Penc, Karlo, Poilblanc, Didier
Publikováno v:
Phys. Rev. B 108, 195153 (2023)
Motivated by the search for chiral spin liquids (CSL), we consider a simple model defined on the kagome lattice of interacting SU(3) spins (in the fundamental representation) including two-site and three-site permutations between nearest neighbor sit
Externí odkaz:
http://arxiv.org/abs/2306.16192
Autor:
Huang, Rui-Zhen, Zhang, Long, Läuchli, Andreas M., Haegeman, Jutho, Verstraete, Frank, Vanderstraeten, Laurens
Publikováno v:
Phys. Rev. Lett. 132, 086503 (2024)
The use of finite entanglement scaling with matrix product states (MPS) has become a crucial tool for studying 1+1d critical lattice theories, especially those with emergent conformal symmetry. We argue that finite entanglement introduces a relevant
Externí odkaz:
http://arxiv.org/abs/2306.08163
Publikováno v:
Phys. Rev. Lett. 131, 226502 (2023)
We provide evidence that the spectrum of the local effective Hamiltonian and the transfer operator in infinite-system matrix product state simulations are identical up to a global rescaling factor, i.e.~the speed of light of the system, when the unde
Externí odkaz:
http://arxiv.org/abs/2303.00663