QCD finite T transition -- Comparison between Wilson and staggered results

A quantitative comparison between the finite temperature behaviour of the staggered and Wilson fermion formulations are performed. The comparison is based on a physical quantity that is expected to be quite sensitive to the fermionic features of the action. For that purpose we use the height of the peak for $d\chi_s/dT$, where $\chi_s$ is the quark number susceptibility.Comment: 6 pages. Talk presented at Lattice 200

The role of the Hall effect in the global structure and dynamics of planetary magnetospheres: Ganymede as a case study

We present high resolution Hall MHD simulations of Ganymede's magnetosphere demonstrating that Hall electric fields in ion-scale magnetic reconnection layers have significant global effects not captured in resistive MHD simulations. Consistent with local kinetic simulations of magnetic reconnection, our global simulations show the development of intense field-aligned currents along the magnetic separatrices. These currents extend all the way down to the moon's surface, where they may contribute to Ganymede's aurora. Within the magnetopause and magnetotail current sheets, Hall currents in the reconnection plane accelerate ions to the local Alfv\'en speed in the out-of-plane direction, producing a global system of ion drift belts that circulates Jovian magnetospheric plasma throughout Ganymede's magnetosphere. We discuss some observable consequences of these Hall-induced currents and ion drifts: the appearance of a sub-Jovian "double magnetopause" structure, an Alfv\'enic ion jet extending across the upstream magnetopause and an asymmetric pattern of magnetopause Kelvin-Helmholtz waves.Comment: 14 pages, 12 figures; presented at Geospace Environment Modeling (GEM) workshop (June, 2014) and Fall American Geophysical Union (AGU) meeting (December, 2014); submitted to Journal of Geophysical Research, December 201

Ajándékok az ifjú párnak

While the surviving historical sources at least occasionally inform us about the dates of aristocratic marriages, they almost completely keep silent about the wedding presents that were exhanged on such solemn occasions. This paper accordingly presents a document, as yet unique of its kind, which also sheds light on the gifts that were offered to the married couple on the occasion of their nuptials. The marriage of István Bátori, palatine of the Hungarian Kingdom, and Sophie, duchess of Mazovia from the Polish royal Piast dynasty, is one of the best documented such ceremonies from the medieval period. Alongside the date of the ceremony, we also know the marriage contract, and even some at least of the invitations issued for the later postponed wedding have come down to us. Likewise known is the date of the nuptials that were eventually celebrated two years later, in February 1523, and the names of some of the participants. All that was missing to round out the picture was a list of the wedding presents that the invited guests offered to the married couple. A recently discovered source, while not containing all such gifts, at least makes us know a major group of them. According to the charter in question, the second husband of duchess Sophie, 'Master of the Table' Lajos Pekri accused in 1550 András Bátori, magister tavarnicorum of having robbed from the castle of Dévény a great number of valuables, itemized in the document, altogether worth forty-six thousand florins, belonging to Lajos himself, his late spouse duchess Sophie, and his stepdaughter Anna. Fortunately, the list of stolen pieces, garments and jewellery, also contains those presents that had been given to the duchess on the occasion of her first marriage to palatine István Bátori. The uniqueness of the case narrated by the charter sufficiently justifies its publication here in extenso