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Bound states in boson impurity models
Tao Shi, Ying-Hai Wu, A. Gonzalez-Tudela +1
The formation of bound states involving multiple particles underlies many interesting quantum physical phenomena, such as Efimov physics or superconductivity. In this work we show…
Fundamental limitations in the purifications of tensor networks
G. De las Cuevas, T. S. Cubitt, J. I. Cirac +2
We show a fundamental limitation in the description of quantum many-body mixed states with tensor networks in purification form. Namely, we show that there exist mixed states which…
Thermal evolution of the one-flavour Schwinger model using Matrix Product States
H. Saito, M. C. Bañuls, K. Cichy +2
The Schwinger model, or 1+1 dimensional QED, offers an interesting object of study, both at zero and non-zero temperature, because of its similarities to QCD. In this proceeding, w…
Edge states for the Kalmeyer-Laughlin wave function
Benedikt Herwerth, Germán Sierra, Hong-Hao Tu +2
We study lattice wave functions obtained from the SU(2) Wess-Zumino-Witten conformal field theory. Following Moore and Read's construction, the Kalmeyer-Laughlin fractional qua…
Rapid adiabatic preparation of injective PEPS and Gibbs states
Yimin Ge, András Molnár, J. Ignacio Cirac
We propose a quantum algorithm for many-body state preparation. It is especially suited for injective PEPS and thermal states of local commuting Hamiltonians on a lattice. We show…
Fermionic Projected Entangled Pair States and Local U(1) Gauge Theories
Erez Zohar, Michele Burrello, Thorsten B. Wahl +1
Tensor networks, and in particular Projected Entangled Pair States (PEPS), are a powerful tool for the study of quantum many body physics, thanks to both their built-in ability of…