Temperature oscillations and sound waves in hadronic matter

The Speed of Sound in Hadronic Matter

We calculate the speed of sound cs in an ideal gas of resonances, whose mass spectrum is assumed to have the Hagedorn form ρ(m) ∼ m exp{bm}, which leads to singular behavior at the critical temperature Tc = 1/b. With a = 4 the pressure and the energy density remain finite at Tc, while the specific heat diverges there. As a function of the temperature, the corresponding speed of sound initially ...

Glory oscillations in the index of refraction for matter waves.

We have measured the index of refraction for sodium de Broglie waves in gases of Ar, Kr, Xe, and N2 over a wide range of sodium velocities. We observe glory oscillations--a velocity-dependent oscillation in the forward scattering amplitude. An atom interferometer was used to observe glory oscillations in the phase shift caused by the collision, which are larger than glory oscillations observed ...

Manipulation of matter waves using Bloch and Bloch–Zener oscillations

We present theoretical and numerical results on the dynamics of ultracold atoms in an accelerated singleand double-periodic optical lattice. In the single-periodic potential Bloch oscillations can be used to generate fast directed transport with very little dispersion. The dynamics in the double-periodic system is dominated by Bloch–Zener oscillations, i.e. the interplay of Bloch oscillations a...

Strangeness in hadronic stellar matter.

Hyperonic Crystallization in Hadronic Matter

We propose a method for analyzing the formation of spatially ordered configurations in hadronic matter, related to the crystallization of the hyperonic sector in a lattice. The method allows the determination of the density ranges where such ordered configurations are energetically favoured with respect to the usual gaseous configurations. This leads to the determination of the parameters of a ...