Search Results - "Jansen, Karl"

Nonperturbative Renormalization of Nonlocal Quark Bilinears for Parton Quasidistribution Functions on the Lattice Using an Auxiliary Field by Green, Jeremy, Jansen, Karl, Steffens, Fernanda

“…Parton quasidistribution functions provide a path toward an ab initio calculation of parton distribution functions (PDFs) using lattice QCD. One of the…”
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A complete non-perturbative renormalization prescription for quasi-PDFs by Alexandrou, Constantia, Cichy, Krzysztof, Constantinou, Martha, Hadjiyiannakou, Kyriakos, Jansen, Karl, Panagopoulos, Haralambos, Steffens, Fernanda

“…In this work we present, for the first time, the non-perturbative renormalization for the unpolarized, helicity and transversity quasi-PDFs, in an RI′ scheme…”
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Digitising SU(2) gauge fields and the freezing transition by Hartung, Tobias, Jakobs, Timo, Jansen, Karl, Ostmeyer, Johann, Urbach, Carsten

“…Efficient discretisations of gauge groups are crucial with the long term perspective of using tensor networks or quantum computers for lattice gauge theory…”
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A resource efficient approach for quantum and classical simulations of gauge theories in particle physics by Haase, Jan F., Dellantonio, Luca, Celi, Alessio, Paulson, Danny, Kan, Angus, Jansen, Karl, Muschik, Christine A.

“…Gauge theories establish the standard model of particle physics, and lattice gauge theory (LGT) calculations employing Markov Chain Monte Carlo (MCMC) methods…”
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Efficient Basis Formulation for ( 1 + 1 )-Dimensional SU(2) Lattice Gauge Theory: Spectral Calculations with Matrix Product States by Bañuls, Mari Carmen, Cichy, Krzysztof, Cirac, J. Ignacio, Jansen, Karl, Kühn, Stefan

“…We propose an explicit formulation of the physical subspace for a (1+1 )-dimensional SU(2) lattice gauge theory, where the gauge degrees of freedom are…”
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Two-flavor QCD correction to lepton magnetic moments at leading order in the electromagnetic coupling by Feng, Xu, Jansen, Karl, Petschlies, Marcus, Renner, Dru B

“…We present a reliable nonperturbative calculation of the QCD correction, at leading order in the electromagnetic coupling, to the anomalous magnetic moment of…”
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Canonical momenta in digitized Su(2) lattice gauge theory: definition and free theory by Jakobs, Timo, Garofalo, Marco, Hartung, Tobias, Jansen, Karl, Ostmeyer, Johann, Rolfes, Dominik, Romiti, Simone, Urbach, Carsten

“…Hamiltonian simulations of quantum systems require a finite-dimensional representation of the operators acting on the Hilbert space H . Here we give a…”
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Dimensional Expressivity Analysis of Parametric Quantum Circuits by Funcke, Lena, Hartung, Tobias, Jansen, Karl, Kühn, Stefan, Stornati, Paolo

“…Parametric quantum circuits play a crucial role in the performance of many variational quantum algorithms. To successfully implement such algorithms, one must…”
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Comparison of topological charge definitions in Lattice QCD by Alexandrou, Constantia, Athenodorou, Andreas, Cichy, Krzysztof, Dromard, Arthur, Garcia-Ramos, Elena, Jansen, Karl, Wenger, Urs, Zimmermann, Falk

“…In this paper, we show a comparison of different definitions of the topological charge on the lattice. We concentrate on one small-volume ensemble with 2…”
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Simulating 2D Effects in Lattice Gauge Theories on a Quantum Computer by Paulson, Danny, Dellantonio, Luca, Haase, Jan F., Celi, Alessio, Kan, Angus, Jena, Andrew, Kokail, Christian, van Bijnen, Rick, Jansen, Karl, Zoller, Peter, Muschik, Christine A.

“…Quantum computing is in its greatest upswing, with so-called noisy-intermediate-scale-quantum devices heralding the computational power to be expected in the…”
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Chiral condensate from the twisted mass Dirac operator spectrum by Cichy, Krzysztof, Garcia-Ramos, Elena, Jansen, Karl

“…A bstract We present the results of our computation of the dimensionless chiral condensate r 0 Σ 1/3 with N f = 2 and N f = 2 + 1 + 1 flavours of maximally…”
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Leading hadronic contributions to the running of the electroweak coupling constants from lattice QCD by Burger, Florian, Jansen, Karl, Petschlies, Marcus, Pientka, Grit

“…A bstract The quark-connected leading-order hadronic contributions to the running of the electromagnetic fine structure constant, α QED , and the weak mixing…”
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Precision study of excited state effects in nucleon matrix elements by Dinter, Simon, Alexandrou, Constantia, Constantinou, Martha, Drach, Vincent, Jansen, Karl, Renner, Dru B.

“…We present a dedicated analysis of the influence of excited states on the calculation of nucleon matrix elements. This calculation is performed at a fixed…”
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Symmetry Breaking in Geometric Quantum Machine Learning in the Presence of Noise by Tüysüz, Cenk, Chang, Su Yeon, Demidik, Maria, Jansen, Karl, Vallecorsa, Sofia, Grossi, Michele

“…Geometric quantum machine learning based on equivariant quantum neural networks (EQNNs) recently appeared as a promising direction in quantum machine learning…”
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From spin chains to real-time thermal field theory using tensor networks by Bañuls, Mari Carmen, Heller, Michal P., Jansen, Karl, Knaute, Johannes, Svensson, Viktor

“…One of the most interesting directions in theoretical high-energy and condensed-matter physics is understanding dynamical properties of collective states of…”
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Determining the ability for universal quantum computing: Testing controllability via dimensional expressivity by Gago-Encinas, Fernando, Hartung, Tobias, Reich, Daniel M., Jansen, Karl, Koch, Christiane P.

“…Operator controllability refers to the ability to implement an arbitrary unitary in SU(N) and is a prerequisite for universal quantum computing…”
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The Higgs boson resonance width from a chiral Higgs–Yukawa model on the lattice by Gerhold, Philipp, Jansen, Karl, Kallarackal, Jim

“…The Higgs boson is a central part of the electroweak theory and is crucial to generate masses for quarks, leptons and the weak gauge bosons. We use a…”
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Simulating gauge theories with variational quantum eigensolvers in superconducting microwave cavities by Zhang, Jinglei, Ferguson, Ryan, Kühn, Stefan, Haase, Jan F., Wilson, C.M., Jansen, Karl, Muschik, Christine A.

“…Quantum-enhanced computing methods are promising candidates to solve currently intractable problems. We consider here a variational quantum eigensolver (VQE),…”
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Determination of low-energy constants of Wilson chiral perturbation theory by Herdoíza, Gregorio, Jansen, Karl, Michael, Chris, Ottnad, Konstantin, Urbach, Carsten

“…A bstract By matching Wilson twisted mass lattice QCD determinations of pseudoscalar meson masses to Wilson Chiral Perturbation Theory we determine the…”
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Towards overcoming the Monte Carlo sign problem with tensor networks by Bañuls, Mari Carmen, Cichy, Krzysztof, Ignacio Cirac, J., Jansen, Karl, Kühn, Stefan, Saito, Hana

“…The study of lattice gauge theories with Monte Carlo simulations is hindered by the infamous sign problem that appears under certain circumstances, in…”
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