Upper limits on electric dipole moments of tau-lepton, heavy quarks, and W-boson

We discuss upper limits on the electric dipole moments (EDM) of the tau-lepton, heavy quarks, and W-boson, which follow from the precision measurements of the electron and neutron EDM.Comment: 8 pages, 7 figures; misprint corrected, results do not chang

Influence of external phase and gain-loss modulation on bound solitons in laser systems

4openopenChang, W.; Akhmediev, N.; Wabnitz, Stefan; Taki, M.W., Chang; N., Akhmediev; Wabnitz, Stefan; M., Tak

Publikationsliste PD Dr. Heide Hoffmann - Publikationen zum Ökolandbau

Publikationen von Heide Hoffmann C. Stroemel S. Müller G. Marx N. Künkel Ch.-L. Chang W. Hübner K. Reute

2009 Founders Day

The 2009 Founders Day OJ Snyder Memorial Medal recipient was John W Becher, DO 1970. The Mason W Pressly Memorial Medal recipients were Helen Anne Chang, DO 2009, and Trupti Ramesh Patel, DO 2009 GA-PCOM.https://digitalcommons.pcom.edu/founders_day_programs/1050/thumbnail.jp

Existence and asymptotics for solutions of a non-local Q-curvature equation in dimension three

We study conformal metrics on $R^3$, i.e., metrics of the form $g_u=e^{2u}|dx|^2$, which have constant $Q$-curvature and finite volume. This is equivalent to studying the non-local equation $$(-\Delta)^\frac32 u = 2 e^{3u}$$ in $R^3$ $$V:=\int_{\mathbb{R}^3}e^{3u}dx<\infty,$$ where $V$ is the volume of $g_u$. Adapting a technique of A. Chang and W-X. Chen to the non-local framework, we show the existence of a large class of such metrics, particularly for $V\le 2\pi^2=|S^3|$. Inspired by previous works of C-S. Lin and L. Martinazzi, who treated the analogue cases in even dimensions, we classify such metrics based on their behavior at infinity.Comment: 22 page

Lin Chang and Lei Cai in a Faculty Recital

This is the program for the faculty recital featuring violinist Lin Chang and pianist Lei Cai. This recital took place on April 20, 2004, in the W. Francis McBeth Recital Hall

Dual parameterization of generalized parton distributions and description of DVCS data

We discuss a new leading-order parameterization of generalized parton distributions of the proton, which is based on the idea of duality. In its minimal version, the parameterization is defined by the usual quark singlet parton distributions and the form factors of the energy-momentum tensor. We demonstrate that our parameterization describes very well the absolute value, the Q^2-dependence and the W-dependence of the HERA data on the total DVCS cross section and contains no free parameters in that kinematics. The parameterization suits especially well the low-x_{Bj} region, which allows us to advocate it as a better alternative to the frequently used double distribution parameterization of the GPDs.Comment: 13 pages, 2 figures, LaTeX. Revised version: equation for the DVCS cross section corrected; one reference added; numerical results did not chang