output
19972026
most citedRobustness of coherence: An operational and observable measure of quantum coherence

590 citations

Showing 2022Show all

10 papers · 1 filter

math.OC2022

Bounding Real Tensor Optimizations via the Numerical Range

Nathaniel Johnston, Logan Pipes

We show how the numerical range of a matrix can be used to bound the optimal value of certain optimization problems over real tensor product vectors. Our bound is stronger than the…

cs.DS2022★ 6 cited

Computing linear sections of varieties: quantum entanglement, tensor decompositions and beyond

Nathaniel Johnston, Benjamin Lovitz, Aravindan Vijayaraghavan

We study the problem of finding elements in the intersection of an arbitrary conic variety in with a given linear subspace (where can be the real or com…

cs.LO2022★ 1 cited

Jacobians and Gradients for Cartesian Differential Categories

Jean-Simon Pacaud Lemay

Cartesian differential categories come equipped with a differential combinator that formalizes the directional derivative from multivariable calculus. Cartesian differential catego…

quant-ph2022★ 7 cited

A Complete Hierarchy of Linear Systems for Certifying Quantum Entanglement of Subspaces

Nathaniel Johnston, Benjamin Lovitz, Aravindan Vijayaraghavan

We introduce a hierarchy of linear systems for showing that a given subspace of pure quantum states is entangled (i.e., contains no product states). This hierarchy outperforms know…

hep-ph2022★ 15 cited

Pion spectroscopy and dynamics using the holographic light-front Schrödinger equation and the 't Hooft equation

Mohammad Ahmady, Satvir Kaur, Chandan Mondal +1

We show that the holographic Schrödinger equation of light-front chiral QCD, together with the 't Hooft equation of (1+1)-dimensional QCD in the large limit, can simultaneous…

astro-ph.SR2022★ 7 cited

Analysis of eight magnetic chemically peculiar stars with rotational modulation

O. Kobzar, V. Khalack, D. Bohlender +9

Since the end of 2018, the Transiting Exoplanet Survey Satellite (TESS) has provided stellar photometry to the astronomical community. We have used TESS data to study rotational mo…

math.CO2022★ 3 cited

Real Schur norms and Hadamard matrices

John Holbrook, Nathaniel Johnston, Jean-Pierre Schoch

We present a preliminary study of Schur norms , where M is a matrix whose entries are , and denotes the entrywise (i.e., Sch…

nucl-ex2022★ 3 cited

First measurement of polarisation transfer in deuteron photodisintegration

M. Bashkanov, D. P. Watts, S. J. D. Kay +66

A first measurement of the polarisation transfer from a circularly-polarised photon to the final state neutron () in deuterium photodisintegration has been carried out. T…

quant-ph2022★ 6 cited

Absolutely -Incoherent Quantum States and Spectral Inequalities for Factor Width of a Matrix

Nathaniel Johnston, Shirin Moein, Rajesh Pereira +1

We investigate the set of quantum states that can be shown to be -incoherent based only on their eigenvalues (equivalently, we explore which Hermitian matrices can be shown to h…

astro-ph.SR2022★ 1 cited

Using Computational Models to Uncover the Parameters of Three Kepler Binaries: KIC 5957123, KIC 8314879, and KIC 10727668

Padraic Odesse, Catherine Lovekin

Theories of stellar convective core overshoot can be examined through analysis of pulsating stars. Better accuracy can be achieved by obtaining external constraints such as those p…