To understand the coupling behavior of the spinor with spacetime, the explicit form of the energy-momentum tensor of the spinor in curved spacetime is important. This problem seems to be overlooked for a long time. In this paper we derive the explicit form of energy momentum tensors and display some equivalent but simple forms of the covariant derivatives for both the Weyl spinor and the Dirac ...

Worldsheet supersymmetric string action is written in duality invariant form for flat as well as curved backgrounds. First the action in flat backgrounds is written by introducing auxiliary fields. We also give the superfield form of these actions and obtain the off-shell supersymmetry algebra. The action has a modified Lorentz invariance and supersymmetry and reduces to the usual form when the...

1. Abstract This paper is aimed at minimizing the bending moment which caused in curved surface structures. The dimension of structure weight is three, and the material strength dimension is two. Therefore, the bigger the structure scale is, the more bearing capacity will be occupied by initial stress caused by dead load. Thus, with the growing of span, structural form will be greatly restricte...

Background: Following the expansion of human infertility, different procedures have been utilized for separation of normal sperm during ICSI (Intra cytoplasmic sperm injection). Hypo-osmotic swelling test (HOST) is one of the tests which have been introduced for assessment of integrity of sperm membrane when confronted with hypo osmotic condition. This test may also reflect intracellular organe...

In this paper, we describe TCLP, a Temporal Causal Link Planner which takes into account the duration of actions and accepts disjunctive temporal relations, while still using the principles of traditional planners which assume actions are instantaneous. We have defined a model of action with duration, and translate any temporal disjunctive relation between 2 actions with duration into a set of ...

We consider the problem of querying data sources that have limited capabilities and can thus only be accessed by complying with certain binding patterns for their attributes. This is often the case, e.g., in the context of data on the web queryable via web forms as well as in legacy data wrapped in relational tables. In such contexts, computing the answer to a user query cannot be done as in a ...

We show that scalar, 0-form, Galileon actions—models whose field equations contain only second derivatives—can be generalized to arbitrary even p-forms. More generally, they need not even depend on a single form, but may involve mixed p combinations, including equal pmultiplets, where odd p fields are also permitted: We construct, for given dimension D, general actions depending on scalars, vec...