- Full text PDF available (11)
- This year (0)
- Last 5 years (5)
- Last 10 years (8)
Journals and Conferences
Symmetry is believed to be a hallmark of appealing faces. However, this does not imply that the most aesthetically pleasing proportions are necessary those that arise from the simple division of the face into thirds or fifths. Based on the etymology of the word symmetry, as well as on specific examples and theories of beauty, we conclude that φ-value,… (More)
The in-medium behavior of the nucleon spectral density including self-energies is revisited within the framework of QCD sum rules. Special emphasis is given to the density dependence of four-quark condensates. A complete catalog of four-quark condensates is presented and relations among them are derived. Generic differences of such four-quark condensates… (More)
Utilizing the QCD sum rule approach to the behavior of the omega meson in nuclear matter we derive evidence for in-medium changes of particular four-quark condensates from the recent CB-TAPS experiment for the reaction gamma + A --> A' + omega(--> pi0gamma) with A = Nb and LH2.
With QCD sum rule evaluations, spectral changes of hadrons inside nuclear matter are considered, which shed light on QCD condensates and thus on the non-perturbative structure of the QCD ground state. For some light quark configurations, ω meson and nucleon, the relevance of four-quark condensates is compared; the D meson as a representative of heavy-light… (More)
We investigate the evolution of galaxy clustering for galaxies in the redshift range 2.0 < z < 5.0 using the VIMOS Ultra Deep Survey (VUDS). We present the projected (real-space) two-point correlation function wp(rp) measured by using 3022 galaxies with robust spectroscopic redshifts in two independent fields (COSMOS and VVDS-02h) covering in total 0.8 deg.… (More)
Context. The ionizing Lyman continuum flux escaping from high-redshift galaxies into the intergalactic medium is a fundamental quantity to understand the physical processes involved in the reionization epoch. However, from an observational point of view, direct detections of HI ionizing photons at high redshifts are feasible for galaxies mainly in the… (More)
This research is aimed at developing a seismic measurement based method for estimating pile bearing capacity. By modeling the rigid body motion of the pilesoil system, the pile bearing capacity is analytically derived as a function of mass, natural frequency, damping ratio, and soil quake. This paper presents the procedure of extracting the natural… (More)
The QCD sum rule approach to the in-medium behavior of hadrons is discussed for ω meson, nucleon and D meson. Emphasis is devoted to the impact of four-quark condensates and to order parameters of spontaneous symmetry breaking.
Abstract. The QCD sum rule approach to in-medium modifications of the ω meson in nuclear matter is reviewed with emphasis of its relation to 4-quark condensates and chiral symmetry restoration. Possible implications of the CBTAPS experiment for the reaction γA → Aω(→ πγ) are sketched and the particularly important role of di-electron probes, accessible with… (More)
A dense non-aqueous phase liquid sample formed by release of coal tar into the environment was derivatised by trimethylsilylation using the reagent N,O-bis(trimethylsilyl)trifluoroacetamide (BSTFA) and extracted in hexane using accelerated solvent extraction. This procedure enables comprehensive extraction of an extensive suite of organic compounds from… (More)