Some Problems of Topology Change Description in the Theory of Space-Time

The problem of topology change description in gravitation theory is analized in detailes. It is pointed out that in standard four-dimensional theories the topology of space may be considered as a particular case of boundary conditions (or constraints). Therefore, the possible changes of space topology in (3+1)-dimensions do not admit dynamical description nor in classical nor in quantum theories and the statements about dynamical supressing of topology change have no sence. In the framework of multidimensional theories the space (and space-time) may be considered as the embedded manifolds. It give the real posibilities for the dynamical description of the topology of space or space-time.Comment: 16 pages, LaTex; some misprints, which prevent generation of PS file, are correcte

New genus of flea beetle (Coleoptera: Chrysomelidae: Galerucinae: Alticini) from the Upper Eocene Baltic amber

Ambraaltica baltica new genus and new species (Chrysomelidae: Galerucinae: Alticini) is described from Upper Eocene Baltic amber. It is illustrated and compared to recent flea beetle genera and genera known from fossil resins

Micrometeoric investigations in the near earth space according to observations on AES '' Kosmos-163''

Micrometeor observations in near earth space by Cosmos 16

Image-charge detection of the Rydberg states of surface electrons on liquid helium

We propose and experimentally demonstrate a new spectroscopic method, image-charge detection, for the Rydberg states of surface electrons on liquid helium. The excitation of the Rydberg states of the electrons induces an image current in the circuit to which the electrons are capacitively coupled. In contrast to the conventional microwave absorption measurement, this method makes it possible to resolve the transitions to high-lying Rydberg states of the surface electrons. We also show that this method can potentially be used to detect quantum states of a single electron, which paves a way to utilize the quantum states of the surface electrons on liquid helium for quantum computing