Probing in-medium vector meson decays by double-differential di-electron spectra in heavy-ion collisions at SIS energies

Within a transport code simulation for heavy-ion collisions at bombarding energies around 1 AGeV, we demonstrate that double-differential di-electron spectra with suitable kinematical cuts are useful to isolate (i) the $\rho$ meson peak even in case of strong broadening, and (ii) the in-medium $\omega$ decay contribution. The expected in-medium modifications of the vector meson spectral densities can thus be probed in this energy range via the di-electron channel

Computing symmetries and recursion operators of evolutionary super-systems using the SsTools environment

At a very informal but practically convenient level, we discuss the step-by-step computation of nonlocal recursions for symmetry algebras of nonlinear coupled boson-fermion $N=1$ supersymmetric systems by using the SsTools environment.Comment: 18 pages, accepted to Nonlinear Systems and Their Remarkable Mathematical Structures. (N.Euler ed) CRC Press, Boca Raton FL, US

Efficient sympathetic motional ground-state cooling of a molecular ion

Cold molecular ions are promising candidates in various fields ranging from precision spectroscopy and test of fundamental physics to ultra-cold chemistry. Control of internal and external degrees of freedom is a prerequisite for many of these applications. Motional ground state cooling represents the starting point for quantum logic-assisted internal state preparation, detection, and spectroscopy protocols. Robust and fast cooling is crucial to maximize the fraction of time available for the actual experiment. We optimize the cooling rate of ground state cooling schemes for single $^{25}\mathrm{Mg}^{+}$ ions and sympathetic ground state cooling of $^{24}\mathrm{MgH}^{+}$. In particular, we show that robust cooling is achieved by combining pulsed Raman sideband cooling with continuous quench cooling. Furthermore, we experimentally demonstrate an efficient strategy for ground state cooling outside the Lamb-Dicke regime.Comment: 11 pages, 11 figure

Supersymmetric features of the Maxwell fish-eye lens

We provide a supersymmetric analysis of the Maxwell fisheye (MF) wave problem at zero energy. Working in the so-called $R_{0}=0$ sector, we obtain the corresponding superpartner (fermionic) MF effective potential within Witten's one-dimensional (radial) supersymmetric procedure.Comment: 5 pages in Latex, one figure not included has been published as Fig. 2 in Phys. Lett. A 208 (1995) 33-3

Vinayak Damodar Savarkar’s ‘strategic agnosticism’: A compilation of his socio-political philosophy and worldview

Since India's independence (and even before) there is a growing ideological debate regarding its identity and self-understanding. The focal point of this discussion is the much-disputed and multi-faceted Indian historical figure Vinayak Damodar Savarkar (1985-1966). His life and work, and above all his literary compositions, point to numerous paradoxes and controversial phenomena, which divides the discussants basically into two essential camps. On the one side are those who see Savarkar and his socio-political vision (Hindutva) that he proclaimed as the greatest danger to the foundation of the modern, secular state, democracy, and multiculturalism. With this background, Savarkar is used as the synonym for an "anti-modern" regression, and as the ideological founder of a phenomenon that has usually been referred to as "Hindu nationalism" or "Hindu fundamentalism". This side is opposed by a second camp consisting of people who tend to see Savarkar and his perceptions of state theory as a legitimate and ambitious form of democratic self-determination. However, all these controversies about Savarkar do not take into account the philosophical tenets underlying his social and political thoughts. Both Indian as well as Western scholars have focused only on some particular fragments of his thoughts without spending the time and effort to understand his various theoretical concepts in a complex and coherent framework. Therefore, this article aims to explore the philosophical foundation of his notions and actions, and suggests crucial variables for further scientific analysis