Massive Supergravity and Deconstruction

We present a simple superfield Lagrangian for massive supergravity. It comprises the minimal supergravity Lagrangian with interactions as well as mass terms for the metric superfield and the chiral compensator. This is the natural generalization of the Fierz-Pauli Lagrangian for massive gravity which comprises mass terms for the metric and its trace. We show that the on-shell bosonic and fermionic fields are degenerate and have the appropriate spins: 2, 3/2, 3/2 and 1. We then study this interacting Lagrangian using goldstone superfields. We find that a chiral multiplet of goldstones gets a kinetic term through mixing, just as the scalar goldstone does in the non-supersymmetric case. This produces Planck scale (Mpl) interactions with matter and all the discontinuities and unitarity bounds associated with massive gravity. In particular, the scale of strong coupling is (Mpl m^4)^1/5, where m is the multiplet's mass. Next, we consider applications of massive supergravity to deconstruction. We estimate various quantum effects which generate non-local operators in theory space. As an example, we show that the single massive supergravity multiplet in a 2-site model can serve the function of an extra dimension in anomaly mediation.Comment: 24 pages, 2 figures, some color. Typos fixed and refs added in v

Nonlinear Spin Dynamics in Nuclear Magnets

A method is developed for solving nonlinear systems of differential, or integrodifferential, equations with stochastic fields. The method makes it possible to give an accurate solution for an interesting physical problem: What are the peculiarities of nonlinear spin dynamics in nonequilibrium nuclear magnets coupled with a resonator? Evolution equations for nuclear spins are derived basing on a Hamiltonian with dipole interactions. The ensemble of spins is coupled with a resonator electric circuit. Seven types of main relaxation regimes are found: free induction, collective induction, free relaxation, collective relaxation, weak superradiance, pure superradiance, and triggered superradiance. The initial motion of spins can be originated by two reasons, either by an imposed initial coherence or by local spin fluctuations due to nonsecular dipole interactions. The relaxation regimes caused by the second reason cannot be described by the Bloch equations. Numerical estimates show good agreement with experiment.Comment: 1 file, 47 pages, LaTe

Rumen digestion, physiological state and performance of steers when fed with processed field pea grain

It was determined that when processing high protein grain with organic acid, it is used by young cattle more efficiently. As a result, protein degradability in the rumen is decreased by 18 p.p., the ammonia level decreases in the rumen fluid by 17,5%, ciliates level – by 2,4% and the amount of volatile fatty acids increases by 1,6%. The animals were clinically healthy, all the hematological parameters were within physiological standards. Higher hemoglobin level was determined in blood of animals of the experimental group by 3,1%, total protein – by 5,6, calcium – by 4,7 and phosphorus – by 5,4%, respectively, while the amount of glucose and urea decreased by 2,1% and 7,4%, which ensures increase of feed efficiency: the growth energy of animals increases by 6,8%, the cost of feed and protein for weight gain is reduced by 3,3 and 3,2%.Установлено, что при обработке зерна с высоким содержанием белка органической кислотой повышается эффективность использования его молодняком крупного рогатого скота. В результате расщепляемость протеина в рубце снижается на 18 п.п., в рубцовой жидкости уменьшается содержание аммиака на 17,5%, инфузорий на 2,4% и повышается количество летучих жирных кислот на 1,6%. Животные были клинически здоровы, все гематологические показатели находились в пределах физиологических норм. В крови животных опытной группы установлено Более высокое содержание гемоглобина (на 3,1%), общего белка (на 5,6), кальция (на 4,7) и фосфора (на 5,4%) при снижении количества глюкозы и мочевины на 2,1 и 7,4%, что обеспечивает повышение эффективности использования кормов: энергия роста животных увеличивается на 6,8%, затраты кормов и протеина на получение прироста снижаются на 3,3 и 3,2%