11 papers
Interwoven long-range order induced by random fields
Jeremiah Bender, Thomas Vojta
We propose a distinct type of long-range ordered phase that can occur in classical and quantum many-particle systems. It is induced by impurities and defects that locally break a s…
Mean-field theory of myopic self-avoiding fractional Brownian motion
Rashad Bakhshizada, Skirmantas Janušonis, Ralf Metzler +1
Myopic self-avoiding fractional Brownian motion (FBM) is a stochastic process in which an ensemble of particles is driven by fractional Gaussian noise while being repelled by the g…
Diffusion disorder in the contact process
Valentin Anfray, Manisha Dhayal, Hong-Yan Shih +1
We study the effects of spatially inhomogeneous diffusion on the non-equilibrium phase transition in the contact process. The directed-percolation critical point in the contact pro…
Magnetic field-tuned magnetic order and metamagnetic criticality in non-stoichiometric CeAuBi
Halyna Hodovanets, Hyunsoo Kim, Tristin Metz +9
We present a detailed study of magnetization, resistivity, heat capacity, and X-ray and neutron powder diffraction measurements performed on single crystals of non-stoichiometric C…
Quantum critical behavior of diluted quasi-one-dimensional Ising chains
Logan Sowadski, Thomas Vojta
CoNbO is a unique magnetic material. It features bulk three-dimensional magnetic order at low temperatures, but its quantum critical behavior in a magnetic field is well de…
Fractional Brownian motion with mean-density interaction: a myopic self-avoiding fractional stochastic process
Jonathan House, Rashad Bakhshizada, Skirmantas Janušonis +2
Fractional Brownian motion is a Gaussian stochastic process with long-range correlations in time; it has been shown to be a useful model of anomalous diffusion. Here, we investigat…