14 papers
Superconductivity from emergent dipolar interactions in a fractionalized Fermi liquid
Mina-Lou Schleith, Arthur Bril, Nick Bultinck
The paper develops a theory showing how electrons doped into a fractionalized Fermi liquid form spinon‑chargon bound states that interact via a dipolar potential, leading to robust…
Electrons interacting with Goldstone modes and the rotating frame
Konstantinos Vasiliou, Yuchi He, Nick Bultinck
We consider electronic systems with a spontaneously broken continuous symmetry. The scattering vertex between electrons and Goldstone modes is calculated over the entire Brillouin…
Strange metal and Fermi arcs from disordering spin stripes
Xu Zhang, Nick Bultinck
We revisit the effective theory for fluctuating spin stripes coupled to a Fermi surface, and consider the parameter regime where a spin nematic phase intervenes between the spin de…
Quantum Monte Carlo fermion spectroscopy of a non-compact CP model
Xu Zhang, Nick Bultinck
We study a model describing electrons coupled to anti-ferromagnetic spin fluctuations, and consider the situation where hedgehog defects in the order parameter field are suppressed…
Extracting average properties of disordered spin chains with translationally invariant tensor networks
Kevin Vervoort, Wei Tang, Nick Bultinck
We develop a tensor network-based method for calculating disorder-averaged expectation values in random spin chains without having to explicitly sample over disorder configurations…
Lowering the temperature of two-dimensional fermionic tensor networks with cluster expansions
Sander De Meyer, Atsushi Ueda, Yuchi He +2
Representing the time-evolution operator as a tensor network constitutes a key ingredient in several algorithms for studying quantum lattice systems at finite temperature or in a n…