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The multi-flavor Schwinger model with chemical potential - Overcoming the sign problem with Matrix Product States
Mari Carmen Bañuls, Krzysztof Cichy, J. Ignacio Cirac +3
During recent years there has been an increasing interest in the application of matrix product states, and more generally tensor networks, to lattice gauge theories. This non-pertu…
Density Induced Phase Transitions in the Schwinger Model: A Study with Matrix Product States
Mari Carmen Bañuls, Krzysztof Cichy, J. Ignacio Cirac +2
We numerically study the zero temperature phase structure of the multiflavor Schwinger model at nonzero chemical potential. Using matrix product states, we reproduce analytical res…
Digital quantum simulation of lattice gauge theories with dynamical fermionic matter
Erez Zohar, Alessandro Farace, Benni Reznik +1
We propose a scheme for digital quantum simulation of lattice gauge theories with dynamical fermions. Using a layered optical lattice with ancilla atoms that can move and interact…
Systematic construction of density functionals based on matrix product state computations
Michael Lubasch, Johanna I. Fuks, Heiko Appel +3
We propose a systematic procedure for the approximation of density functionals in density functional theory that consists of two parts. First, for the efficient approximation of a…
Ultrashort Pulses for Far-Field Nanoscopy
Patrick Maurer, J. Ignacio Cirac, Oriol Romero-Isart
We show that ultrashort pulses can be focused, in a particular instant, to a spot size given by the wavelength associated with its spectral width. For attosecond pulses this spot s…