The M5â€“brane is investigated near critical field-strength. We show that this limit on the M5â€“brane reduces to the noncommutative open string limit on the D4â€“brane. The reduction on a twoâ€“torus leadsâ€¦ (More)

We describe properties of the M-theory five-brane containing Q coincident self-dual strings on its worldvolume. This is the five-brane description of Q membranes ending on the five-brane. Inâ€¦ (More)

A 290-million-year-old reptilian skeleton from the Lower Permian (Asselian) of Germany provides evidence of abilities for cursorial bipedal locomotion, employing a parasagittal digitigrade posture.â€¦ (More)

We investigate, in a certain decoupling limit, the effect of having a constant Câ€“ field on the Mâ€“theory fiveâ€“brane using an open membrane probe. We define an open membrane metric for the fiveâ€“braneâ€¦ (More)

This paper describes the background field equations for strings in T-duality symmetric formalisms in which the dimension of target space is doubled and the sigma model supplemented with constraints.â€¦ (More)

We consider the concept of a generalised manifold in the O(d, d) setting, i.e., in double geometry. The conjecture by Hohm and Zwiebach for the form of finite generalised diffeomorphisms is shown toâ€¦ (More)

We investigate the recently developed theory of multiple membranes. In particular, we consider open membranes, i.e. the theory defined on a membrane world volume with a boundary. We first restrictâ€¦ (More)

Using the techniques developed by Lunin and Maldacena we calaculate the supergravity solutions of membranes and fivebranes in the presence of a background C field. All the distinct possible C-fieldâ€¦ (More)

An articulated partial skeleton, including a nearly complete skull and left forelimb, of a crocodylomorph reptile from the Upper Triassic Chinle Formation of Ghost Ranch, New Mexico, is referable toâ€¦ (More)

The oldest theropod dinosaurs are known from the Carnian of Argentina and Brazil. However, the evolutionary diversification of this group after its initial radiation but prior to theâ€¦ (More)