Membranes with a boundary (2009)
Berman, David S, Thompson, Daniel C
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 restrict...
Aspects of Multiple Membranes (2008)
Berman, David S., Tadrowski, Laura C., Thompson, Daniel C.
This paper examines various aspects of the recently proposed theory of coincident membranes by Bagger and Lambert. These include the properties of open membranes and the resulting boundary theory...
Jason S. Anderson, Amy C. Henrici, Stuart S. Sumida, Thomas Martens, David S. Berman
Georgenthalia clavinasica, a new genus and species of amphibamid dissorophoid temnospondyl, is represented by a small, complete, postmetamorphic skull from the Lower Permian Bromacker locality,...
Holographic Noncommutativity, David S. Berman, Vanicson L. Campos, Martin Cederwall, Ulf Gran, Henric Larsson, ...
Abstract: We examine noncommutative Yang–Mills and open string theories using magnetically and electrically deformed supergravity duals. The duals are near horizon regions of Dp-brane bound state...
Duality Symmetric Strings, Dilatons and O(d,d) Effective Actions (2007)
Berman, David S., Thompson, Daniel C.
We calculate the background field equations for the T-duality symmetric string building on previous work by including the effect of the Dilaton up to two-loops. Inclusion of the Dilaton allows us to...
M-theory branes and their interactions (2007)
In recent years there has been some progress in understanding how one might model the interactions of branes in M-theory despite not having a fundamental perturbative description. The goal of this...
The temnospondyl amphibian Zatrachys serratus Cope, 1878, is reported for the first time from the eastern United States on the basis of a partial skull table and isolated cranial elements from the...
M-Theory Brane Deformations (2007)
Berman, David S., Tadrowski, Laura C.
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-field...
SEBASTIAN VOIGT, DAVID S. BERMAN, AMY C. HENRICI
As a single stratigraphic source and site of high-fidelity vertebrate trackways and superbly preserved skeletons, the Lower Permian Tambach Formation, lowermost unit of the Upper Rotliegend, of the...
Background Field Equations for the Duality Symmetric String (2007)
Berman, David S., Copland, Neil B., Thompson, Daniel C.
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....
The string partition function in Hull's doubled formalism (2007)
Berman, David S, Copland, Neil B
T-duality is one of the essential elements of string theory. Recently, Hull has developed a formalism where the dimension of the target space is doubled so as to make T-duality manifest. This is then...
A note on the M2-M5 brane system and fuzzy spheres (2006)
Berman, David S., Copland, Neil B.
This note covers various aspects of recent attempts to describe membranes ending on fivebranes using fuzzy geometry. In particular, we examine the Basu-Harvey equation and its relation to the Nahm...
M-theory and the string genus expansion (2006)
Berman, David S., Perry, Malcolm J.
The partition function of the membrane is investigated. In particular, the case relevant to perturbative string theory of a membrane with topology $S^1 \times \Sigma$ is examined. The coupling...
Five-brane Calibrations and Fuzzy Funnels (2005)
Berman, David S., Copland, Neil B.
We present a generalisation of the Basu-Harvey equation that describes membranes ending on intersecting five-brane configurations corresponding to various calibrated geometries.
Open membranes, ribbons and deformed Schild strings (2005)
Berman, David S., Pioline, Boris
We analyze open membranes immersed in a magnetic three-form field-strength $C$. While cylindrical membranes in the absence of $C$ behave like tensionless strings, when the $C$ flux is present the...
The Self-Dual String and Anomalies in the M5-brane (2004)
Berman, David S., Harvey, Jeffrey A.
We study the anomalies of a charge $Q_2$ self-dual string solution in the Coulomb branch of $Q_5$ M5-branes. Cancellation of these anomalies allows us to determine the anomaly of the zero-modes on...
Open membranes, ribbons and deformed Schild strings (2004)
Berman, David S., Pioline, Boris
We analyze open membranes immersed in a magnetic three-form field-strength $C$. While cylindrical membranes in the absence of $C$ behave like tensionless strings, when the $C$ flux is present the...
Open membranes, ribbons and deformed Schild strings (2004)
Berman, David S., Pioline, Boris
We analyze open membranes immersed in a magnetic three-form field-strength $C$. While cylindrical membranes in the absence of $C$ behave like tensionless strings, when the $C$ flux is present the...
Open membranes, ribbons and deformed Schild strings (2004)
Berman, David S., Pioline, Boris
We analyze open membranes immersed in a magnetic three-form field-strength $C$. While cylindrical membranes in the absence of $C$ behave like tensionless strings, when the $C$ flux is present the...
Aspects of M-5 brane world volume dynamics (2003)
This paper studies various aspects of the world volume dynamics of the M-theory five-brane, including: non-BPS solutions and solution generating symmetries; the scattering properties of world volume...
HOMOLOGY OF THE ASTRAGALUS AND STRUCTURE AND FUNCTION OF THE TARSUS OF DIADECTIDAE (2003)
DAVID S BERMAN, AMY C. HENRICI
Superbly preserved tarsi of a new, undescribed, primitive member of Diadectidae and of Diadectes, the best known member of the family, are described. The major distinction between them is the...
Deformation independent open brane metrics and generalized theta parameters (2001)
Berman, David S., Cederwall, Martin, Gran, Ulf, Larsson, Henric, Nielsen, Mikkel, Nilsson, Bengt E. W., ...
We investigate the consequences of generalizing certain well established properties of the open string metric to the conjectured open membrane and open Dp-brane metrics. By imposing deformation...
David S. Berman, Martin Cederwall, Ulf Gran, Henric Larsson, Mikkel Nielsen
hep-th/yymmxxx
JAMES M. CLARK, HANS-DIETER SUES, DAVID S. BERMAN
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 to...
Holographic Noncommutativity (2000)
Berman, David S., Campos, Vanicson L., Cederwall, Martin, Gran, Ulf, Larsson, Henric, Nielsen, Mikkel, ...
We examine noncommutative Yang-Mills and open string theories using magnetically and electrically deformed supergravity duals. The duals are near horizon regions of Dp-brane bound state solutions...
ORIGIN AND EARLY EVOLUTION OF THE AMNIOTE OCCIPUT (2000)
Reinterpretation of cranial materials of the diadectomorphs Limnoscelis and Diadectes has prompted a reconsideration of the origin and early evolution of the amniote occiput. The basic approach is a...
DAVID A. EBERTH, DAVID S BERMAN, STUART S. SUMIDA, HAGEN HOPF
The Bromacker section of the Lower Permian, Tambach Formation, in central Germany, yields an important fossil-vertebrate assemblage that was deposited in an upland setting near the center of a small,...
DAVID S BERMAN, AMY C. HENRICI, STUART S. SUMIDA, THOMAS MARTENS
Two nearly complete, articulated, mature specimens of the amphibian Seymouria are described from the Lower Permian Tambach Formation, lowermost unit of the Upper Rotliegend, of the Bromacker locality...