Andreas Schäfer
YOU?
Author Swipe
View article: Eigenstate Thermalization in 1+1-Dimensional SU(2) Lattice Gauge Theory Coupled with Dynamical Fermions
Eigenstate Thermalization in 1+1-Dimensional SU(2) Lattice Gauge Theory Coupled with Dynamical Fermions Open
We test the eigenstate thermalization hypothesis (ETH) in 1+1-dimensional SU(2) lattice gauge theory (LGT) with one flavor of dynamical fermions. Using the loop-string-hadron framework of the LGT with a bosonic cut-off, we exactly diagonal…
View article: Entanglement properties of SU(2) gauge theory
Entanglement properties of SU(2) gauge theory Open
Understanding how isolated quantum systems thermalize is central to both fundamental physics and the development of quantum technologies. In this Perspective, we present recent and new results on thermalization in nonabelian gauge theory f…
View article: Quark transverse spin-momentum correlation of the nucleon from lattice QCD: the Boer-Mulders function
Quark transverse spin-momentum correlation of the nucleon from lattice QCD: the Boer-Mulders function Open
A bstract We present the first lattice QCD calculation of the quark transverse spin-momentum correlation, i.e., the naive time-reversal-odd Boer-Mulders function, of the nucleon, using large-momentum effective theory (LaMET). The calculati…
View article: Hybrid renormalization for distribution amplitude of a light baryon in large momentum effective theory
Hybrid renormalization for distribution amplitude of a light baryon in large momentum effective theory Open
Lightcone distribution amplitudes for a light baryon can be extracted through the simulation of the quasi-distribution amplitudes (quasi-DAs) on the lattice. We implement the hybrid renormalization for the quasi DAs of light baryons. Latti…
View article: Holography for BCFTs with multiple boundaries: multi-splitting quenches
Holography for BCFTs with multiple boundaries: multi-splitting quenches Open
A bstract We elaborate on the method introduced in arXiv:2403.02165 for holographic duals of Boundary Conformal Field Theories (BCFTs) with multiple boundaries. Naïvely, as the number of boundaries grow large such a calculation becomes unm…
View article: FACT: Federated Adaptive Cross Training
FACT: Federated Adaptive Cross Training Open
http://dx.doi.org/10.13039/501100002347 Federal Ministry of Education and Research Bonn Office
View article: Quark transverse spin-momentum correlation of the pion from lattice QCD: The Boer-Mulders function
Quark transverse spin-momentum correlation of the pion from lattice QCD: The Boer-Mulders function Open
We present the first lattice QCD calculation of the quark transverse spin-momentum correlation, i.e., the T-odd Boer-Mulders function of the pion, using large-momentum effective theory. The calculation is done at three lattice spacings a={…
View article: Heavy meson lightcone distribution amplitudes from Lattice QCD
Heavy meson lightcone distribution amplitudes from Lattice QCD Open
Lightcone distribution amplitudes (LCDAs) within the framework of heavy quark effective theory (HQET) play a crucial role in the theoretical description of weak decays of heavy bottom mesons. However, the first-principle determination of H…
View article: Comparison of selective intra-arterial to standard intravenous administration in percutaneous electrochemotherapy (pECT) for liver tumors
Comparison of selective intra-arterial to standard intravenous administration in percutaneous electrochemotherapy (pECT) for liver tumors Open
Background Electrochemotherapy (ECT) is a local nonsurgical effective tumor treatment in the hand of the clinician for the treatment of patients with liver tumors or metastases. The study aimed to test the technical feasibility and safety …
View article: Light cone distribution amplitude for the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi mathvariant="normal">Λ</mml:mi></mml:math> baryon from lattice QCD
Light cone distribution amplitude for the baryon from lattice QCD Open
We calculate the leading-twist light cone distribution amplitudes of the Λ(uds) baryon using lattice QCD methods within the framework of large-momentum effective theory. Our numerical computations are carried out with Nf=2+1 stout smeared …
View article: Calculation of heavy meson light-cone distribution amplitudes from lattice QCD
Calculation of heavy meson light-cone distribution amplitudes from lattice QCD Open
We develop an approach for calculating heavy quark effective theory (HQET) light-cone distribution amplitudes (LCDAs) by employing a sequential effective theory methodology. The theoretical foundation of the framework is established, eluci…
View article: Light Cone Distribution Amplitude for the $Λ$ Baryon from Lattice QCD
Light Cone Distribution Amplitude for the $Λ$ Baryon from Lattice QCD Open
We calculate the leading-twist light-cone distribution amplitudes of the light $Λ$ baryon using lattice methods within the framework of large momentum effective theory. Our numerical computations are conducted employing $N_f=2+1$ stout sme…
View article: Calculation of heavy meson light-cone distribution amplitudes from lattice QCD
Calculation of heavy meson light-cone distribution amplitudes from lattice QCD Open
We develop an approach for calculating heavy quark effective theory (HQET) light-cone distribution amplitudes (LCDAs) by employing a sequential effective theory methodology. The theoretical foundation of the framework is established, eluci…
View article: Valence quark PDFs of the proton from two-current correlations in lattice QCD
Valence quark PDFs of the proton from two-current correlations in lattice QCD Open
Following previous works on that topic, we consider Euclidean hadronic matrix elements in position space of two spatially separated local currents on the lattice, in order to extract the x dependence of parton distribution functions (PDFs)…
View article: Spatial Cellular Networks from omics data with SpaCeNet
Spatial Cellular Networks from omics data with SpaCeNet Open
Advances in omics technologies have allowed spatially resolved molecular profiling of single cells, providing a window not only into the diversity and distribution of cell types within a tissue, but also into the effects of interactions be…
View article: Two Splits, Three Ways: Advances in Double Splitting Quenches
Two Splits, Three Ways: Advances in Double Splitting Quenches Open
In this work we introduce a method for calculating holographic duals of BCFTs with more than two boundaries. We apply it to calculating the dynamics of entanglement entropy in a 1+1d CFT that is instantaneously split into multiple segments…
View article: Entanglement Entropy of ($\mathbf{2+1}$)-Dimensional SU(2) Lattice Gauge Theory on Plaquette Chains
Entanglement Entropy of ($\mathbf{2+1}$)-Dimensional SU(2) Lattice Gauge Theory on Plaquette Chains Open
We study the entanglement entropy of Hamiltonian SU(2) lattice gauge theory in $2+1$ dimensions on linear plaquette chains and show that the entanglement entropies of both ground and excited states follow Page curves. The transition of the…
View article: Toward QCD on Quantum Computer: Orbifold Lattice Approach
Toward QCD on Quantum Computer: Orbifold Lattice Approach Open
We propose an orbifold lattice formulation of QCD suitable for quantum simulations. We show explicitly how to encode gauge degrees of freedom into qubits using noncompact variables, and how to write down a simple truncated Hamiltonian in t…
View article: Eigenstate thermalization in (<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mn>2</mml:mn><mml:mo>+</mml:mo><mml:mn>1</mml:mn></mml:mrow></mml:math>)-dimensional SU(2) lattice gauge theory
Eigenstate thermalization in ()-dimensional SU(2) lattice gauge theory Open
We present preliminary numerical evidence for the hypothesis that the Hamiltonian SU(2) gauge theory discretized on a lattice obeys the eigenstate thermalization hypothesis (ETH). To do so we study three approximations: (a) a linear plaque…
View article: Testing eigenstate thermalization hypothesis for non-Abelian gauge theories
Testing eigenstate thermalization hypothesis for non-Abelian gauge theories Open
We report on progress in full quantum understanding of thermalization in non-Abelian gauge theories. Specifically, we test the eigenstate thermalization hypothesis for (2+1)-dimensional SU(2) lattice gauge theory.
View article: Nucleon Transversity Distribution in the Continuum and Physical Mass Limit from Lattice QCD
Nucleon Transversity Distribution in the Continuum and Physical Mass Limit from Lattice QCD Open
We report a state-of-the-art lattice QCD calculation of the isovector quark transversity distribution of the proton in the continuum and physical mass limit using large-momentum effective theory. The calculation is done at four lattice spa…
View article: Testing Eigenstate Thermalization Hypothesis for Non-Abelian Gauge Theories
Testing Eigenstate Thermalization Hypothesis for Non-Abelian Gauge Theories Open
We report on progress in full quantum understanding of thermalization in non-Abelian gauge theories. Specifically, we test the eigenstate thermalization hypothesis for (2+1)-dimensional SU(2) lattice gauge theory.
View article: 50 Years of quantum chromodynamics
50 Years of quantum chromodynamics Open
Quantum Chromodynamics, the theory of quarks and gluons, whose interactions can be described by a local SU(3) gauge symmetry with charges called “color quantum numbers”, is reviewed; the goal of this review is to provide advanced Ph.D. stu…
View article: Universality of the Collins-Soper kernel in lattice calculations
Universality of the Collins-Soper kernel in lattice calculations Open
The Collins-Soper (CS) kernel is a nonperturbative function that characterizes the rapidity evolution of transverse-momentum-dependent parton distribution functions (TMDPDFs) and wave functions. In this paper, we calculate the CS kernel fo…
View article: Convergent imaging-transcriptomic evidence for disturbed iron homeostasis in Gilles de la Tourette syndrome
Convergent imaging-transcriptomic evidence for disturbed iron homeostasis in Gilles de la Tourette syndrome Open
Gilles de la Tourette syndrome (GTS) is a neuropsychiatric movement disorder with reported abnormalities in various neurotransmitter systems. Considering the integral role of iron in neurotransmitter synthesis and transport, it is hypothes…