Journal
PHYSICAL REVIEW E
Volume 101, Issue 4, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevE.101.042136
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Funding
- U.S. Department of Energy [DE-SC0019030]
- S. N. Bose fellowship from the Department of Science and Technology, Government of India
- Indo-U.S. Science and Technology Forum
- WINStep Forward
- U.S. Department of Energy (DOE) [DE-SC0019030] Funding Source: U.S. Department of Energy (DOE)
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We compute the spectral form factor of two integrable quantum-critical many-body systems in one spatial dimension. The spectral form factor of the quantum Ising chain is periodic in time in the scaling limit described by a conformal field theory; we also compute corrections from lattice effects and deviation from criticality. Criticality in the random Ising chain is described by rare regions associated with a strong randomness fixed point, and these control the long-time limit of the spectral form factor.
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