期刊
PHYSICAL REVIEW LETTERS
卷 119, 期 17, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.119.176601
关键词
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资金
- EPSRC [EP/M508007/1, EP/M007928/1]
- Marie Curie Programme under EC Grant [703697]
- DFG [SFB 1143]
- Marie Curie Actions (MSCA) [703697] Funding Source: Marie Curie Actions (MSCA)
- Engineering and Physical Sciences Research Council [EP/M007928/1, 1643078, EP/M007928/2] Funding Source: researchfish
- EPSRC [EP/M007928/2] Funding Source: UKRI
We study the time evolution after a quantum quench in a family of models whose degrees of freedom are fermions coupled to spins, where quenched disorder appears neither in the Hamiltonian parameters nor in the initial state. Focusing on the behavior of entanglement, both spatial and between subsystems, we show that the model supports a state exhibiting combined area and volume-law entanglement, being characteristic of the quantum disentangled liquid. This behavior appears for one set of variables, which is related via a duality mapping to another set, where this structure is absent. Upon adding density interactions between the fermions, we identify an exact mapping to an XXZ spin chain in a random binary magnetic field, thereby establishing the existence of many-body localization with its logarithmic entanglement growth in a fully disorder-free system.
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