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Showing 1 to 13 of 13 for “"Spectral functions."”.
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Spectral functions for generalized piston configurations.
… examples of non-smooth potentials and find the spectral zeta functions for these piston configurations on manifolds I x N, where I is an interval and N is a smooth compact Riemannian d-1 dimensional manifold. Then we consider the case of any smooth potential with a compact support and develop a …
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Charmonium correlation and spectral functions in quenched lattice QCD at finite temperature
… effects in the charmonium correlators and spectral functions. In particular, our finest lattices have a very small lattice spacing, i.e. $a=0.01$ fm. Using the Maximum Entropy Method we have reconstructed the spectral functions at both temperature below and above the critical temperature. …
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Open and Hidden Charm Mesons at Finite Temperature from Anisotropic Lattice QCD
… a non-perturbative means of studying the spectral quantities of charmed mesons. The suppression of J= in medium is widely considered to be a signal for deconfinement. I will use J= to study the heavy quark diffusion through the QGP. Jet-quenching observed in heavy ion collision experiments …
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Angle-Resolved Photoemission Studies on the Many-Body Effects of High-Temperature Superconductor: Bi-2212
… resolution to extract detailed single-particle spectral functions in Bi-2212. Using these spectral functions, we reconstructed both the non-interacting and interacting spin susceptibilities in the normal and superconducting states. The ARPES-derived susceptibilities reveal a broad continuum of …
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Beyond Color: Lattice Gauge Theory for Strongly-Coupled Physics
… to better understand said theories. First, the spectral function reconstruction problem in LGT is considered, and a new method for spectral function reconstruction in LGT is presented. Spectral functions describe the energy states of a theory: bound states, resonances, and continuum thresholds. …
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First principles Monte Carlo simulation of charge transport in semiconductors
… a new method is presented for the calculation of spectral functions in crystalline solids.
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Analysis of JLab E12-14-012 Ti(e,e′p) Data and Determination of the Ti Spectral Function
… range of kinematics in order to determine the spectral function of protons and neutrons in Argon. The measurements made in E12-14-012 are the first of their kind in argon and are a pivotal step in understanding the electron-Argon interaction and its relation to neutrino scattering. Titanium was …
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Study of the quasielastic ³He(e,e'p) reaction at Q² = 1.5 (GeV/c)² up to missing momenta of 1 GeV/c
… and ³He(e,e'p)pn cross sections and distorted spectral functions were measured up to missing momenta of 1000 MeV/c, and, for the three-body breakup channel, up to missing energy of 30 MeV. The A[sub]TL asymmetry, R[sub]T and R[sub]TL response functions, and the combination R[sub]L + R[sub]TT …
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Walsh analysis, epistasis, and optimization problem difficulty for evolutionary algorithms
… and Gray code are also studied. The epistasis of functions composed of subfunctions combined by various operators is predicted. I show that functions can display odd and even parity and prove several theorems on the invariance of these properties. An application of these theorems demonstrates that …
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Techniques for handling nonsymmetric cones in interior point algorithms
… Practically efficient, self-concordant barrier functions have not been previously suggested for many useful nonsymmetric cones. For the nonsymmetric cones with known barriers, there is little published work on how to implement numerically stable and computationally fast barrier oracles for …
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Heat trace and heat content asymptotics for Schrodinger Operators of stable processes/fractional Laplacians
… expansion as <em>t</em> ↓ 0 of the following spectral functions for smooth bounded domains Ω ⊂ <strong>R</strong><em><sup> d</sup></em>, [special characters omitted] where <em>p</em>(Ω,α/<em> t</em>)(<em>x, y</em>) is the transition density of a stable process killed upon exiting Ω. ^ The …
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Spectral Optimization Problems Controlling Wave Phenomena
… motion. We consider the shape optimization of functions of Dirichlet-Laplacian eigenvalues associated with the set of star-shaped, symmetric, bounded planar regions with smooth boundary. The boundary of such a region is represented using a Fourier-cosine series and the optimization problem is …