5 research outputs found
Correlations in Disordered Solvable Tensor Network States
Solvable matrix product and projected entangled pair states evolved by dual
and ternary-unitary quantum circuits have analytically accessible correlation
functions. Here, we investigate the influence of disorder. Specifically, we
compute the average behavior of a physically motivated two-point equal-time
correlation function with respect to random disordered solvable tensor network
states arising from the Haar measure on the unitary group. By employing the
Weingarten calculus, we provide an exact analytical expression for the average
of the th moment of the correlation function. The complexity of the
expression scales with and is independent of the complexity of the
underlying tensor network state. Our result implies that the correlation
function vanishes on average, while its covariance is nonzero.Comment: 28 pages, 2 figures, comments welcom
Ternary unitary quantum lattice models and circuits in dimensions
We extend the concept of dual unitary quantum gates to quantum lattice models
in dimensions, by introducing and studying ternary unitary
four-particle gates, which are unitary in time and both spatial dimensions.
When used as building blocks of lattice models with periodic boundary
conditions in time and space (corresponding to infinite temperature states),
dynamical correlation functions exhibit a light-ray structure. We also
generalize solvable MPS to two spatial dimensions with cylindrical boundary
conditions, by showing that the analogous solvable PEPS can be identified with
matrix product unitaries. In the resulting tensor network for evaluating
equal-time correlation functions, the bulk ternary unitary gates cancel out. We
delineate and implement a numerical algorithm for computing such correlations
by contracting the remaining tensors.Comment: 16 pages, 6 figure
Differential upregulation of host cell protein kinases by the replication of α-, β- and γ-herpesviruses provides a signature of virus-specific signalling
Infections with human herpesviruses share several molecular characteristics, but the diversified medical outcomes are distinct to viral subfamilies and species. Notably, both clinical and molecular correlates of infection are a challenging field and distinct patterns of virus-host interaction have rarely been defined: this study therefore focuses on the search for virus-specific molecular indicators. As previous studies have demonstrated the impact of herpesvirus infections on changes in host signalling path- ways, we illustrate virus-modulated expression levels of individual cellular protein kinases. Current data reveal (i) alpha- and beta-, gamma-herpesvirus-specific patterns of kinase modulation as well as (ii) differential levels of up-/downregulated kinase expression and phosphorylation, which collectively suggest (iii) defined signalling patterns specific for the various viruses (VSS) that may prove useful for defining molecular indicators. Combined, the study confirms the correlation between herpesviral replication and modulation of signalling kinases, possibly exploitable for the in vitro characterization of viral infections