Complete Solution for M(atrix) Theory at Two Loops

The complete result for the effective potential for two graviton exchange at two loops in M(atrix) theory can be expressed in terms of a generalized hypergeometric function.Comment: 4 pages, TeX, no figure

Compactifying M-Theory to Four Dimensions

We consider compactifications of ${\cal M}$-theory to four-dimensional Minkowski space on seven-dimensional non-compact manifolds. These compactifications include a warp factor which is non-constant due to the presence of sources coming from fivebranes wrapping two-dimensional submanifolds of the internal seven-dimensional space. We derive the expression for the field strengths and consider an explicit example of this general class of solutions.Comment: 15 pages, TeX, no figures, references adde

Graviton scattering amplitudes in M theory

We compute graviton scattering amplitudes in M theory using Feynman rules for a scalar particle coupled to gravity in eleven dimensions. The processes that we consider describe the single graviton exchange and the double graviton exchange, that in M(atrix) theory correspond to the v^4/r^7 and v^6/r^14 term, respectively. We argue that the v^6/r^14 term appearing in M(atrix) theory at two loops can be obtained from the covariant eleven-dimensional four-graviton amplitude. Finally, we calculate the v^8/r^18 term appearing at two loops in M(atrix) theory. It has been previously conjectured that this term is related to a four graviton scattering amplitude involving the R^4 vertex of M theory

Kaluza-Klein Theories Without Truncation

In this note we present a closed expression for the space-time effective action for all bosonic fields (massless and massive) obtained from the compactification of gravity or supergravity theories (such as type II or eleven-dimensional supergravities) from $D$ to $d$ space-time dimensions.Comment: 20 page

Analysis of the Progression of the Representation of Female Protagonists in the Sci-Fi/Fantasy TV Shows Orphan Black and Buffy the Vampire Slayer: Girl Power, Appropriated “Masculinity” in Conjunction with Femininity, Empowered Sexuality, and the Heterosexual Script

Buffy Summers goes from urban Los Angeles to Sunnydale, California after she is expelled from her previous high school on the grounds of an assortment of Slayer-related incidents. Chosen as the Slayer, Buffy is fated to fight against the forces of darkness, although this responsibility is not always conducive to leading the life of an average teenage girl. Upon moving to Sunnydale, Buffy quickly learns that Sunnydale High School sits directly above a “Hellmouth,” a hub for demon activity. Specifically, the entrance to the Hellmouth is located directly beneath the Sunnydale High School library, home to a curious collection of occult literature and Rupert Giles, the librarian, who Buffy soon discovers is her Watcher. Buffy befriends Xander Harris, a dorky boy who is often teased for his sense of style and lack of stereotypically masculine qualities, and Willow Rosenberg, a shy and awkward computer geek who spurs Buffy to accept her duties as the Slayer. Cordelia, the typical soap bitch of Sunnydale High School, often finds herself entangled with the “Scooby Gang’s” affairs, as the trio are aptly labeled (Jowett 30)