Dr. Patrick Fritzsch
Assistant Professor, Pure & Applied Mathematics
Publications and Further Research Outputs
Peer-Reviewed Publications
L. Chimirri, P. Fritzsch, J. Heitger, F. Joswig, M. Panero, C. Pena, D. Preti, Non-perturbative renormalisation and improvement of non-singlet tensor currents in $N_\mathrm{f}=3$ QCD, 2023
Paola Tavella, Anian Altherr, Lucius Bushnaq, Isabel Campos, Marco Catillo, Alessandro Cotellucci, Madeleine Evie Beth Dale, Patrick Fritzsch, Roman Gruber, Javad Komijani, Jens Lücke, Marina Marinkovic, Sofie Martins, Agostino Patella, Nazario Tantalo, RC* collaboration, Strange and charm contributions to the HVP from C* boundary conditions, Proceedings of The 39th International Symposium on Lattice Field Theory " PoS(LATTICE2022), 2023
Justus T. Kuhlmann, Patrick Fritzsch, Jochen Heitger, On improvement of the axial-vector current with stabilised Wilson fermions, Proceedings of The 39th International Symposium on Lattice Field Theory " PoS(LATTICE2022), 2023
Anthony Sebastian Francis, Francesca Cuteri, Patrick Fritzsch, Giovanni Pederiva, Antonio Rago, Andrea Shindler, André Walker-Loud, Savvas Zafeiropoulos, Gauge generation and dissemination in OpenLat, Proceedings of The 39th International Symposium on Lattice Field Theory " PoS(LATTICE2022), 2023
Jens Lücke, Anian Altherr, Lucius Bushnaq, Isabel Campos, Marco Catillo, Alessandro Cotellucci, Madeleine Evie Beth Dale, Patrick Fritzsch, Roman Gruber, Marina Marinkovic, Agostino Patella, Nazario Tantalo, Paola Tavella, RC* collaboration, $N_f = 1+2+1$ QCD+QED simulations with C$, \star$ boundary conditions, Proceedings of The 39th International Symposium on Lattice Field Theory " PoS(LATTICE2022), 2023
Marco Cè, Mattia Bruno, John Bulava, Anthony Francis, Patrick Fritzsch, Jeremy R. Green, Maxwell T. Hansen, Antonio Rago, Hadronic observables from master-field simulations, Proceedings of The 39th International Symposium on Lattice Field Theory " PoS(LATTICE2022), 2023
Alessandro Cotellucci, Anian Altherr, Lucius Bushnaq, Isabel Campos, Marco Catillo, Madeleine Evie Beth Dale, Patrick Fritzsch, Roman Gruber, Jens Lücke, Marina Marinkovic, Agostino Patella, Nazario Tantalo, Paola Tavella, RC* collaboration, Tuning of QCD+QED simulations with C$, \star$ boundary conditions, Proceedings of The 39th International Symposium on Lattice Field Theory " PoS(LATTICE2022), 2023
Mattia Bruno, Marco Cè, Anthony Francis, Patrick Fritzsch, Jeremy R. Green, Maxwell T. Hansen, Antonio Rago, Exploiting stochastic locality in lattice QCD: hadronic observables and their uncertainties, 2023
Giovanni Pederiva, Francesca Cuteri, Anthony Francis, Patrik Fritzsch, Antonio Rago, Andrea Shindler, André Walker-Loud, Savvas Zafeiropoulos, Benchmark Continuum Limit Results for Spectroscopy with Stabilized Wilson Fermions, Proceedings of The 39th International Symposium on Lattice Field Theory " PoS(LATTICE2022), 2023
Jens Luecke, Lucius Bushnaq, Isabel Campos, Marco Catillo, Alessandro Cotellucci, Madeleine Evie Beth Dale, Patrick Fritzsch, Marina Krstic Marinkovic, Agostino Patella, Nazario Tantalo, An update on QCD+QED simulations with C* boundary conditions, Proceedings of The 38th International Symposium on Lattice Field Theory " PoS(LATTICE2021), 2022
Roman Gruber, Anian Altherr, Lucius Bushnaq, Isabel Campos, Marco Catillo, Alessandro Cotellucci, Madeleine Evie Beth Dale, Patrick Fritzsch, Javad Komijani, Jens Lücke, Marina Marinkovic, Sofie Martins, Agostino Patella, Nazario Tantalo, Paola Tavella, Hadronic vacuum polarization with C* boundary conditions, Proceedings of The 39th International Symposium on Lattice Field Theory " PoS(LATTICE2022), 2022
Anthony Sebastian Francis, Francesca Cuteri, Patrick Fritzsch, Giovanni Pederiva, Antonio Rago, Andrea Schindler, André Walker-Loud, Savvas Zafeiropoulos, Properties, ensembles and hadron spectra with Stabilised Wilson Fermions, Proceedings of The 38th International Symposium on Lattice Field Theory " PoS(LATTICE2021), 2022
Marco Cè, Mattia Bruno, John Bulava, Anthony Francis, Patrick Fritzsch, Jeremy Green, Maxwell T. Hansen, Antonio Rago, Approaching the master-field: Hadronic observables in large volumes, Proceedings of The 38th International Symposium on Lattice Field Theory " PoS(LATTICE2021), 2022
Madeleine Evie Beth Dale, Lucius Bushnaq, Isabel Campos, Marco Catillo, Alessandro Cotellucci, Patrick Fritzsch, Jens Lücke, Marina Krstic Marinkovic, Agostino Patella, Nazario Tantalo, Baryon masses from full QCD+QED$_C$ simulations, Proceedings of The 38th International Symposium on Lattice Field Theory " PoS(LATTICE2021), 2022
Vincent Drach, Patrick Fritzsch, Antonio Rago, Fernando Romero-López, Singlet channel scattering in a composite Higgs model on the lattice, The European Physical Journal C, 82, (1), 2022
Patrick Fritzsch, John Bulava, Marco Cè, Anthony Francis, Martin Lüscher, Antonio Rago, Master-field simulations of QCD, Proceedings of The 38th International Symposium on Lattice Field Theory " PoS(LATTICE2021), 2022
Chimirri, Leonardo, Fritzsch, Patrick, Heitger, Jochen, Joswig, Fabian, Panero, Marco, Pena, Carlos, Preti, David, Non-perturbative renormalization of $O(a)$ improved tensor currents, PoS, 2020
Fritzsch, P., Sommer, R., Stollenwerk, F., Wolff, U., Erratum to: Symanzik improvement with dynamical charm: a 3+1 scheme for Wilson quarks (Journal of High Energy Physics, (2018), 2018, 6, (25), 10.1007/JHEP06(2018)025), Journal of High Energy Physics, 2020, (10), 2020
Mattia Bruno, Isabel Campos Plasencia, Patrick Fritzsch, Jonna Koponen, Carlos Pena, David Preti, Alberto Ramos, Anastassios Vladikas, Light quark masses in ${N_\mathrm{f}=2+1}$ lattice QCD with Wilson fermions, Eur.Phys.J.C, 2020
Campos, Isabel, Patrick Fritzsch, Hansen, Martin, Marinkovic, Marina Krstic, Patella, Agostino, Ramos, Alberto, Tantalo, Nazario, openQ*D code: a versatile tool for QCD+QED simulations, Eur.Phys.J.C, 2020
Francis, Anthony, Patrick Fritzsch, Lüscher, Martin, Rago, Antonio, Master-field simulations of O($a$)-improved lattice QCD: Algorithms, stability and exactness, Comput.Phys.Commun., 2020
Giulia Maria de Divitiis, Patrick Fritzsch, Jochen Heitger, Carl Christian Köster, Simon Kuberski, Anastassios Vladikas, Non-perturbative determination of improvement coefficients $$b_\mathrm{m}$$ and $$b_\mathrm{A}-b_\mathrm{P}$$ and normalisation factor $$Z_\mathrm{m}Z_\mathrm{P}/Z_\mathrm{A}$$ with $$N_\mathrm{f}= 3$$ Wilson fermions, The European Physical Journal C, 79, (9), 2019
Della Morte, M., Fritzsch, P., Gámiz Sánchez, E., Pena Ruano, C., Proceedings, 35th International Symposium on Lattice Field Theory (Lattice 2017), EPJ Web Conf., 2018
Patrick Fritzsch, Mass-improvement of the vector current in three-flavor QCD, JHEP, 2018
Fritzsch, P., Heitger, J., Kuberski, S., O(a) improved quark mass renormalization for a non-perturbative matching of HQET to three-flavor QCD, Proceedings of Science, 334, 2018
Campos, Isabel, Fritzsch, Patrick, Hansen, Martin, Marinkovi", Marina Krsti", Patella, Agostino, Ramos, Alberto, Tantalo, Nazario, openQ*D simulation code for QCD+QED, EPJ Web Conf., 2018
Patrick Fritzsch, Sommer, Rainer, Stollenwerk, Felix, Wolff, Ulli, Symanzik improvement with dynamical charm: a 3+1 scheme for Wilson quarks, JHEP, 2018
Campos, Isabel, Patrick Fritzsch, Pena, Carlos, Preti, David, Ramos, Alberto, Vladikas, Anastassios, Non-perturbative quark mass renormalisation and running in $N_f=3$ QCD, Eur.Phys.J.C, 2018
Fritzsch, Patrick, Heitger, Jochen, Kuberski, Simon, $\mathcal{O}(a)$ improved quark mass renormalization for a non-perturbative matching of HQET to three-flavor QCD, PoS, 2018
Dalla Brida, Mattia, Fritzsch, Patrick, Korzec, Tomasz, Ramos, Alberto, Stefan Sint, Sommer, Rainer, A non-perturbative exploration of the high energy regime in $N_{\mathrm{f}}=3$ QCD, Eur.Phys.J.C, 2018
Bruno, M. and Brida, M.D. and Fritzsch, P. and Korzec, T. and Ramos, A. and Schaefer, S. and Simma, H. and Sint, S. and Sommer, R., QCD Coupling from a Nonperturbative Determination of the Three-Flavor Î Parameter, Physical Review Letters, 119, (10), 2017
Campos, Isabel, Fritzsch, Patrick, Pena, Carlos, Preti, David, Ramos, Alberto, Vladikas, Anastassios, Controlling quark mass determinations non-perturbatively in three-flavour QCD, EPJ Web Conf., 2017
Bruno, M. and Dalla Brida, M. and Fritzsch, P. and Korzec, T. and Ramos, A. and Schaefer, S. and Simma, H. and Sint, S. and Sommer, R., The determination of α
Dalla Brida, M. and Fritzsch, P. and Korzec, T. and Ramos, A. and Sint, S. and Sommer, R., Slow running of the gradient flow coupling from 200Â MeV to 4Â GeV inNf=3QCD, Physical Review D, 95, (1), 2017
Fritzsch, P., Garron, N., Heitger, J., Non-perturbative tests of continuum HQET through small-volume two-flavour QCD, JHEP, 2016
Dalla Brida M, Fritzsch P, Korzec T, Ramos A, Sint S, Sommer R, Determination of the QCD Î Parameter and the Accuracy of Perturbation Theory at High Energies, Physical Review Letters, 117, (18), 2016, p182001-
Fritzsch, Patrick, Pena, Carlos, Preti, David, Non-perturbative renormalization of tensor bilinears in Schrödinger Functional schemes, PoS, 2016
Isabel Campos Plasencia, Fritzsch, Patrick, Carlos Pena, Preti, David, Alberto Ramos, Anastassios Vladikas, Non-perturbative running of quark masses in three-flavour QCD, PoS, 2016
Bruno, M., Mattia Dalla Brida, Fritzsch, P., Korzec, T., Ramos, A., Schaefer, S., Simma, H., Sint, S., Sommer, R., The $\Lambda$-parameter in 3-flavour QCD and $\alpha_s(m_Z)$ by the ALPHA collaboration, PoS, 2016
Campos, Isabel, Fritzsch, Patrick, Pena, Carlos, Preti, David, Ramos, Alberto, Vladikas, Anastassios, Prospects and status of quark mass renormalization in three-flavour QCD, PoS, 2016
Flynn, J.M., Fritzsch, P., Kawanai, T., Lehner, C., Samways, B., Sachrajda, C.T., Van de Water, R.S., Witzel, O., The $B, *B\pi$ Coupling Using Relativistic Heavy Quarks, Phys.Rev.D, 2016
Fritzsch, P., Pena, C., Preti, D., Non-perturbative renormalization of tensor bilinears in Schrödinger Functional schemes, Proceedings of Science, 14-18-July-2015, 2015
Bernardoni, Fabio, Blossier, Benoît, Bulava, John, Della Morte, Michele, Fritzsch, Patrick, Garron, Nicolas, Gérardin, Antoine, Heitger, Jochen, von Hippel, Georg, Simma, Hubert, B-meson spectroscopy in HQET at order 1/m, Phys.Rev.D, 2015
Dalla Brida, Mattia, Fritzsch, Patrick, Korzec, Tomasz, Ramos, Alberto, Sint, Stefan, Sommer, Rainer, A status update on the determination of $\Lambda, {N_f=3}_{\overline{\rm MS}}$ by the ALPHA collaboration, PoS, 2015
Campos, I., Fritzsch, P., Pena, C., Preti, D., Ramos, A., Vladikas, A., Prospects and status of quark mass renormalization in three-flavour QCD, Proceedings of Science, 14-18-July-2015, 2015
Stollenwerk, Felix, Fritzsch, Patrick, Sommer, Rainer, Wolff, Ulli, Determination of $c_{\rm sw}$ in $N_f=3+1$ Lattice QCD with massive Wilson fermions, PoS, 2015
Bernardoni, F., Blossier, B., Bulava, J., Della Morte, M., Fritzsch, P., Garron, N., Gerardin, A., Heitger, J., von Hippel, G., Simma, H., Sommer, R., B-physics with $N_f=2$ Wilson fermions, PoS, 2014
Fritzsch, P., Sommer, R., Stollenwerk, F., Wolff, U., Determination of c
Fritzsch, Patrick, Ramos, Alberto, Stollenwerk, Felix, Critical slowing down and the gradient flow coupling in the Schrödinger functional, PoS, 2014
Flynn, J.M., Fritzsch, P., Kawanai, T., Lehner, C., Sachrajda, C.T., Samways, B., Van de Water, R.S., Witzel, O., The $B, *B\pi$ coupling with relativistic heavy quarks, PoS, 2014
F. Bernardoni, B. Blossier, J. Bulava, M. Della Morte, P. Fritzsch, N. Garron, A. Gerardin, J. Heitger, G. von Hippel, H. Simma, R. Sommer., The b-quark mass from non-perturbative Nf = 2 Heavy Quark Effective Theory at O(1/mh )., Phys.Lett. B (2014), 10.1016/j.physletb, 2014
Fritzsch, Patrick, Ramos, Alberto, Studying the gradient flow coupling in the Schrödinger functional, PoS, 2014
Fritzsch, P., Ramos, A., Stollenwerk, F., Critical slowing down and the gradient flow coupling in the Schrödinger functional, Proceedings of Science, 29-July-2013, 2013
Samways, B., Flynn, J.M., Sachrajda, C.T., Fritzsch, P., Kawanai, T., Lehner, C., Van De Water, R.S., Witzel, O., The B"B"coupling with relativistic heavy quarks, Proceedings of Science, 29-July-2013, 2013
Fritzsch, Patrick, Alberto Ramos, The gradient flow coupling in the Schrödinger Functional, JHEP, 2013
Bahr, F., Bernardoni, F., Blossier, B., Bulava, J., Della Morte, M., Fritzsch, P., Garron, N., Gerardin, A., Heitger, J., von Hippel, G., Ramos, A., Simma, H., Sommer, R., $|V_{ub}|$ determination in lattice QCD, PoS, 2013
, The Lambda parameter and strange quark mass in two-"avour QCD, 2013
Bernardoni, F., Blossier, B., Bulava, J., Della Morte, M., Fritzsch, P., Garron, N., Gérardin, A., Heitger, J., Von Hippel, G., Simma, H., Sommer, R., B-physics with N
Fritzsch, P., Ramos, A., Studying the gradient flow coupling in the Schrödinger functional, Proceedings of Science, 29-July-2013, 2013
Bernardoni, Fabio, Blossier, Benoit, Bulava, John, Della Morte, Michele, Fritzsch, Patrick, Garron, Nicolas, Gerardin, Antoine, Heitger, Jochen, von Hippel, Georg M., Simma, Hubert, B-physics from non-perturbatively renormalized HQET in two-flavour lattice QCD, Nucl.Phys.B Proc.Suppl., 2013
F. Bernardoni, B. Blossier, J. Bulava, M. Della Morte, P. Fritzsch, N. Garron, A. Gérardin, J. Heitger, G. von Hippel, H. Simma, R.Sommer, Decay constants of B-mesons from non-perturbative HQET with two light dynamical quarks, 2013
Bahr, F., Bernardoni, F., Blossier, B., Bulava, J., Della Morte, M., Fritzsch, P., Garron, N., Gérardin, A., Heitger, J., Von Hippel, G., Ramos, A., Simma, H., Sommer, R., |V
Fritzsch, Patrick, The Lambda parameter and strange quark mass in two-flavour QCD, PoS, 2012
B. Blossier, M. Della Morte, P. Fritzsch, N. Garron, J. Heitger, H. Simma, R. Sommer, N. Tantalo, Parameters of Heavy quark effective theory from Nf = 2 lattice QCD, JHEP, 1209, 2012
Bernardoni, F., Blossier, B., Bulava, J., Della Morte, M., Fritzsch, P., Garron, N., Gerardin, A., Heitger, J., von Hippel, G., Simma, H., Sommer, R., B-physics from HQET in two-flavour lattice QCD, PoS, 2012
Bernardoni, F., Blossier, B., Bulava, J., Della Morte, M., Fritzsch, P., Garron, N., Gérardin, A., Heitger, J., Von Hippel, G., Simma, H., Sommer, R., B physics from HQET in two-flavour lattice QCD, Proceedings of Science, Part F130497, 2012
Blossier, Benoit, Bulava, John, Della Morte, Michele, Donnellan, Michael, Fritzsch, Patrick, Garron, Nicolas, Heitger, Jochen, von Hippel, Georg, Simma, Hubert, Sommer, Rainer, $M_b$ and $f_B$ from non-perturbatively renormalized HQET with $N_f$=2 light quarks, PoS, 2011
Blossier, B., Bulava, J., Morte, M.D., Donnellan, M., Fritzsch, P., Garron, N., Heitger, J., von Hippel, G., Simma, H., Sommer, R., M
Blossier, Benoit, Bulava, John, Della Morte, Michele, Donnellan, Michael, Fritzsch, Patrick, Garron, Nicolas, Heitger, Jochen, von Hippel, Georg, Leder, Bjorn, Simma, Hubert, Sommer, Rainer, B meson spectrum and decay constant from Nf=2 simulations, PoS, 2010
Blossier, B., Bulava, J., Morte, M.D., Donnellan, M., Fritzsch, P., Garron, N., Heitger, J., Von Hippel, G., Leder, B., Simma, H., Sommer, R., B meson spectrum and decay constant from N
Fritzsch, Patrick, Heitger, Jochen, Tantalo, Nazario, Non-perturbative improvement of quark mass renormalization in two-flavour lattice QCD, JHEP, 2010
Della Morte, Michele, Fritzsch, Patrick, Heitger, Jochen, Sommer, Rainer, Non-perturbative quark mass dependence in the heavy-light sector of two-flavour QCD, PoS, 2008
Della Morte, Michele, Fritzsch, Patrick, Meyer, Harvey, Simma, Hubert, Sommer, Rainer, Takeda, Shinji, Witzel, Oliver, Wolff, Ulli, Scaling test of two-flavor O(a)-improved lattice QCD, JHEP, 2008
Della Morte, Michele, Fritzsch, Patrick, Heitger, Jochen, Non-perturbative renormalization of the static axial current in two-flavour QCD, JHEP, 2007
Della Morte, M., Fritzsch, P., Leder, B., Takeda, S., Witzel, O., Wolff, U., Meyer, H., Simma, H., Sommer, R., Preparing for N(f) = 2 simulations at small lattice spacings, PoS, 2007
Della Morte, Michele, Fritzsch, Patrick, Heitger, Jochen, Meyer, Harvey B., Simma, Hubert, Sommer, Rainer, Towards a non-perturbative matching of HQET and QCD with dynamical light quarks, PoS, 2007
Della Morte, M., Fritzsch, P., Leder, B., Takeda, S., Witzel, O., Wolff, U., Meyer, H., Simma, H., Sommer, R., Preparing for N
Research Expertise
Description
The Standard Model (SM) of particle physics is a gauged quantum field theory containing the internal symmetries of the unitary product group SU(3)×SU(2)×U(1). The theory is commonly viewed as containing a fundamental set of particles - the leptons, quarks, gauge bosons and the Higgs boson. Within the SM, the SU(3)-color symmetry group is the building block for Quantum Chromodynamics (QCD), the theory of the strong interaction between quarks and gluons. These fundamental particles make up composite hadrons such as the proton, neutron and pion. The complicated nature of this interaction requires to formulate QCD on a space-time lattice in order to determine physical properties of hadrons measured in collider experiments around the world. In my research I employ such a lattice discretisation and high-performant supercomputers or clusters to determine how hadrons decay and interact with each other. Understanding their interaction with high accuracy informs ongoing searches for physics beyond the SM and sheds light on some important scientific questions of our times, e.g., about the baryon asymmetry of our universe or the origin of dark matter. The key tools of my research involve, e.g., programming and running large scale simulations, numerical analysis, flavour physics and effective field theories. I am working on reducing systematic effects in present day lattice QCD calculations with Wilson fermions to push their applicability to processes mainly addressed by other discretisation to date. Ultimately, I want to include electromagnetic (QED) and strong isospin-breaking effects, such that - just as in nature - u, d, s and c quarks are not identical and carry an electric charge. Most recently, I have been working on a better discretisation and establishing the master-field approach as a new way to determine hadron properties.Projects
- Title
- Physics from the master-field
- Summary
- We have been granted 38M core-h (operational price per core-h: 0.03 EUR) at the DiRAC facility (UK) to establish Lattice QCD calculations using the master-field approach.
- Funding Agency
- DiRAC, UK
- Date From
- April 2021
- Date To
- March 2022
Recognition
Representations
Expert for European Commission, mostly for EuroHPC activities
Co-founder of the OpenLat initiative (https://openlat1.gitlab.io), overseeing the gauge field generation and leader of the flavour physics & Symanzik improvement working group.
As continuation from last year, I am still co-advising a BSc and MSc student at University of Muenster, Germany, in the group of Prof. J. Heitger.
External Examiner for Bachelor, Master and PhD thesis in my wider research area
Awards and Honours
Postdoctoral Fellowship at CERN
Postdoctoral Fellowship in excellence grant SO(IFT)
Marie Curie Early Stage Researcher
Memberships
Member of the German Physical Society (DPG)
Co-founder and leading member of the Open Lattice Initiative, an association of lattice scientists in the EU & US to promote new developments, young researchers and open science.