P-Band Induced Self-Organization and Dynamics with Repulsively Driven Ultracold Atoms in an Optical Cavity.

We investigate a Bose-Einstein condensate strongly coupled to an optical cavity via a repulsive optical lattice. We detect a stable self-ordered phase in this regime, and show that the atoms order through an antisymmetric coupling to the P band of the lattice, limiting the extent of the phase and changing the geometry of the emergent density modulation. Furthermore, we find a nonequilibrium phase with repeated intense bursts of the intracavity photon number, indicating nontrivial driven-dissipative dynamics.

Phenotypic diversity in an endangered freshwater fish (Actinopterygii, Leuciscidae).

was examined from recent and historical collections within the known range of the species with special emphasis on intraspecific variability and variations, and compared to its closest relative species (in total, 193 specimens; 33 absolute and 52 proportional measurements and ratios, and 12 counts including vertebrae). was perfectly differentiated in all statistical analyses and can be diagnosed by 76-95 (vs. 64-80) scales in lateral series, 68-83 (vs.

Coupling two order parameters in a quantum gas.

Controlling matter to simultaneously support coupled properties is of fundamental and technological importance (for example, in multiferroics or high-temperature superconductors). However, determining the microscopic mechanisms responsible for the simultaneous presence of different orders is difficult, making it hard to predict material phenomenology or modify properties. Here, using a quantum gas to engineer an adjustable interaction at the microscopic level, we demonstrate scenarios of competition, coexistence and mutual enhancement of two orders.

Distribution of endangered Italian gudgeon (Cypriniformes, Cyprinidae, Gobioninae) with remarks on distinguishing morphological characters.

Distribution data on many freshwater fish species in Croatia are scarce and species identifications are difficult, requiring further detailed studies. This paper presents a report of the Italian gudgeon from the Mirna River in the Istra Peninsula in Croatia, in the south-east from its previously known distribution range. The identification of in Croatia was supported by a morphological comparison with from Italy and Slovenia, the common gudgeon , and the Danubian gudgeon from geographically close locations.

Description of a new species of Rafinesque, 1820 (Actinopterygii, Cyprinidae, Leuciscinae) from the Kolpa River in the Sava River system (upper Danube drainage), with remarks on the geographical distribution of shemayas in the Danube.

, new species, is described from the Kolpa River. The Kolpa is a tributary of the Sava, a major tributary of the Danube River, in the Black Sea basin. is distinguished from its congeners in the Danube drainage, and , by having 23-27, usually 24-26, gill rakers; the ventral keel usually completely covered by scales (scaleless part maximum 15% of the keel length); 15-16, mode 15, branched pectoral-fin rays; the length of the gill raker at the junction of the arch limbs 65-70% of the length of the opposite outer gill filament; and a relatively long lower jaw (37-40% HL or 112-130% interorbital width).