53 citations · 120 across the 7 of their papers we have counts for
7 papers
Quantum Complexity as Hydrodynamics
Pablo Basteiro, Johanna Erdmenger, Pascal Fries +3
As a new step towards defining complexity for quantum field theories, we map Nielsen operator complexity for gates to two-dimensional hydrodynamics. We develop a tractable…
Resolving modular flow: a toolkit for free fermions
Johanna Erdmenger, Pascal Fries, Ignacio A. Reyes +1
Modular flow is a symmetry of the algebra of observables associated to spacetime regions. Being closely related to entanglement, it has played a key role in recent connections betw…
The entanglement and relative entropy of a chiral fermion on the torus
Pascal Fries, Ignacio A. Reyes
We derive the entanglement entropy of chiral fermions on the circle at arbitrary temperature. The spin-sector contribution depends only on the total length of the entangling region…
The entanglement spectrum of chiral fermions on the torus
Pascal Fries, Ignacio A. Reyes
We determine the reduced density matrix of chiral fermions on the torus, for an arbitrary set of disjoint intervals and generic torus modulus. We find the resolvent, which yields t…
Renormalization of lattice field theories with infinite-range wavelets
Pascal Fries, Ignacio Reyes, Johanna Erdmenger +1
We present a new exact renormalization approach for quantum lattice models leading to long-range interactions. The renormalization scheme is based on wavelets with an infinite supp…
Implementing the sine transform of fermionic modes as a tensor network
Hannes Epple, Pascal Fries, Haye Hinrichsen
Based on the algebraic theory of signal processing, we recursively decompose the discrete sine transform of first kind (DST-I) into small orthogonal block operations. Using a diagr…
Finite speed heat transport in a quantum spin chain after quenched local cooling
Pascal Fries, Haye Hinrichsen
We study the dynamics of an initially thermalized spin chain in the quantum XY-model, after sudden coupling to a heat bath of lower temperature at one end of the chain. In the semi…