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Quantum Simulating Nature's Fundamental Fields
Christian W. Bauer, Zohreh Davoudi, Natalie Klco +1
Simulating key static and dynamic properties of matter -- from creation in the Big Bang to evolution into sub-atomic and astrophysical environments -- arising from the underlying f…
A new basis for Hamiltonian SU(2) simulations
Christian W. Bauer, Irian D'Andrea, Marat Freytsis +1
Due to rapidly improving quantum computing hardware, Hamiltonian simulations of relativistic lattice field theories have seen a resurgence of attention. This computational tool req…
Quench dynamics of the Schwinger model via variational quantum algorithms
Lento Nagano, Aniruddha Bapat, Christian W. Bauer
We investigate the real-time dynamics of the -dimensional U(1) gauge theory known as the Schwinger model via variational quantum algorithms. Specifically, we simulate quench…
Quantum Anomaly Detection for Collider Physics
Sulaiman Alvi, Christian Bauer, Benjamin Nachman
Quantum Machine Learning (QML) is an exciting tool that has received significant recent attention due in part to advances in quantum computing hardware. While there is currently no…
Improving Quantum Simulation Efficiency of Final State Radiation with Dynamic Quantum Circuits
Plato Deliyannis, James Sud, Diana Chamaki +3
Reference arXiv:1904.03196 recently introduced an algorithm (QPS) for simulating parton showers with intermediate flavor states using polynomial resources on a digital quantum comp…
Efficient Representation for Simulating U(1) Gauge Theories on Digital Quantum Computers at All Values of the Coupling
Christian W. Bauer, Dorota M. Grabowska
We derive a representation for a lattice U(1) gauge theory with exponential convergence in the number of states used to represent each lattice site that is applicable at all values…
Simulating collider physics on quantum computers using effective field theories
Christian W. Bauer, Marat Freytsis, Benjamin Nachman
Simulating the full dynamics of a quantum field theory over a wide range of energies requires exceptionally large quantum computing resources. Yet for many observables in particle…
Disentangling observable dependence in SCETI and SCETII anomalous dimensions: angularities at two loops
Christian W. Bauer, Aneesh V. Manohar, Pier Francesco Monni
The resummation of radiative corrections to collider jet observables using soft collinear effective theory is encoded in differential renormalization group equations (RGEs), with a…
Dark Matter Spectra from the Electroweak to the Planck Scale
Christian W. Bauer, Nicholas L. Rodd, Bryan R. Webber
We compute the decay spectrum for dark matter (DM) with masses above the scale of electroweak symmetry breaking, all the way to the Planck scale. For an arbitrary hard process invo…
A formalism for the resummation of non-factorizable observables in SCET
Christian W. Bauer, Pier Francesco Monni
In the framework of soft-collinear effective theory (SCET), we show how to formulate the resummation for a broad family of final-state, global observables in high-energy collisions…
Polarization Effects in Standard Model Parton Distributions at Very High Energies
Christian W. Bauer, Bryan R. Webber
We update the earlier work of Refs. arXiv:1703.08562 and arXiv:1712.07147 on parton distribution functions in the full Standard Model to include gauge boson polarization, non-zero…
Standard Model Fragmentation Functions at Very High Energies
Christian W Bauer, Davide Provasoli, Bryan R. Webber
We compute the leading-order evolution of parton fragmentation functions for all the Standard Model fermions and bosons up to energies far above the electroweak scale, where electr…
A numerical formulation of resummation in effective field theory
Christian W. Bauer, Pier Francesco Monni
In this article we show how the resummation of infrared and collinear logarithms within Soft-Collinear Effective Theory (SCET) can be formulated in a way that makes it suitable for…
Combining initial-state resummation with fixed-order calculations of electroweak corrections
Christian W. Bauer, Nicolas Ferland, Bryan R. Webber
We present a resummation of those double-logarithmically enhanced electroweak correction that arise in pp colliders because protons are not SU(2) singlets, by solving DGLAP equatio…
Standard Model Parton Distributions at Very High Energies
Christian W. Bauer, Nicolas Ferland, Bryan R. Webber
We compute the leading-order evolution of parton distribution functions for all the Standard Model fermions and bosons up to energy scales far above the electroweak scale, where el…
Underlying event sensitive observables in Drell-Yan production using GENEVA
Simone Alioli, Christian W. Bauer, Sam Guns +1
We present an extension of the GENEVA Monte Carlo framework to include multiple parton interactions (MPI) provided by PYTHIA8. This allows us to obtain predictions for underlying-e…
Resummation of electroweak Sudakov logarithms for real radiation
Christian W Bauer, Nicolas Ferland
Using the known resummation of virtual corrections together with knowledge of the leading-log structure of real radiation in a parton shower, we derive analytic expressions for the…
Drell-Yan Production at NNLL'+NNLO Matched to Parton Showers
Simone Alioli, Christian W. Bauer, Calvin Berggren +2
We present results for Drell-Yan production from the GENEVA Monte-Carlo framework. We combine the fully-differential NNLO calculation with higher-order resummation in the 0-jettine…
Non-cancellation of electroweak logarithms in high-energy scattering
Aneesh V. Manohar, Brian Shotwell, Christian W. Bauer +1
We study electroweak Sudakov corrections in high energy scattering, and the cancellation between real and virtual Sudakov corrections. Numerical results are given for the case of h…
Heavy Quark Fragmenting Jet Functions
Christian W. Bauer, Emanuele Mereghetti
Heavy quark fragmenting jet functions describe the fragmentation of a parton into a jet containing a heavy quark, carrying a fraction of the jet momentum. They are two-scale object…
Matching Fully Differential NNLO Calculations and Parton Showers
Simone Alioli, Christian W. Bauer, Calvin Berggren +3
We present a general method to match fully differential next-to-next-to-leading (NNLO) calculations to parton shower programs. We discuss in detail the perturbative accuracy criter…
Computing for Perturbative QCD - A Snowmass White Paper
Christian Bauer, Zvi Bern, Radja Boughezal +18
We present a study on high-performance computing and large-scale distributed computing for perturbative QCD calculations.
Combining Higher-Order Resummation with Multiple NLO Calculations and Parton Showers in the GENEVA Monte Carlo Framework
Simone Alioli, Christian W. Bauer, Calvin Berggren +5
We discuss the GENEVA Monte Carlo framework, which combines higher-order resummation (NNLL) of large Sudakov logarithms with multiple next-to-leading-order (NLO) matrix-element cor…
Combining Higher-Order Resummation with Multiple NLO Calculations and Parton Showers in GENEVA
Simone Alioli, Christian W. Bauer, Calvin Berggren +5
We extend the lowest-order matching of tree-level matrix elements with parton showers to give a complete description at the next higher perturbative accuracy in alpha_s at both sma…