Thermal Width Broadening of the 0++Glueball Spectrum nearTc
نویسندگان
چکیده
منابع مشابه
Non-thermal Effects in Stark Broadening*
When an atom is immersed in a plasma the energy levels are broadened and shifted by the interaction with the fluctuating electric field of the plasma. We discuss the effect of this field on the spectral line shape by the use of results from plasma kinetic theory. In particular we show that in the equilibrium plasma the dominant effect is from single-particle collisions although correlation effe...
متن کاملPhotoabsorption spectra of Na(+)(n) clusters: thermal line-broadening mechanisms.
Photoabsorption cross sections of small sodium cluster cations ( Na(+)(n), n = 3, 5, 7, and 9) were calculated at various temperatures with the time-dependent local-density approximation in conjunction with ab initio molecular dynamics simulations, yielding spectra that agree with measured ones without ad hoc line broadening or renormalization. Three thermal line-broadening mechanisms are revea...
متن کاملVisualizing the Mass and Width Spectrum of Unstable Particles
Several graphical representations of the mass and width spectrum of unstable subatomic particles are presented. Such plots are useful tools for introducing students to the particle zoo and provide students an alternate way to organize conceptually what can seem like an overwhelming amount of data. In particular, such graphs highlight phenomenological features of unstable particles characteristi...
متن کاملAnalysis of the New Nexrad Spectrum Width Estimator
Recently, the US network of weather surveillance radars (NEXRAD) was upgraded with the Open Radar Data Acquisition (ORDA) subsystem which includes new receivers, signal processors, and control subsystems (Patel and Macemon 2004). Before this upgrade, the legacy RDA estimated the spectrum width using the standard pulse-pair technique. The new signal processor implements a similar spectrum width ...
متن کاملThe frequency spectrum of pulse width modulated signals
The determination of the frequency spectrum of a pulse width modulated (PWM) signal with general band-limited input x(t) has been an open problem for many years. We describe a new approach that gives exact analytical expressions for the spectra of uniform-sampling PWM signals and natural-sampling PWM signals with single-edge as well as with doubleedge modulation. For the special case of single ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Progress of Theoretical Physics Supplement
سال: 2003
ISSN: 0375-9687
DOI: 10.1143/ptps.151.166