Owen Madden
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Owen Madden has a total of 6 co-authors. Here are the top co-authors by number of shared publications:
- Simon F. Ross
Durham University
7 shared publications - Georgina Titchener
Department of Mathematical Sciences Centre for Particle Theory University of Durham South Road DH1 3LE Durham U.K
2 shared publications - José Figueroa-O'Farrill
The University of Edinburgh
2 shared publications - Vishnu Jejjala
Department of Mathematical Sciences Durham University South Road DH1 3LE Durham U.K
2 shared publications - Joan Simon
David Rittenhouse Laboratories University of Pennsylvania 19104 Philadelphia PA U.S.A
1 shared publication - Joan Simón
University of Edinburgh
1 shared publication
Latest Publications
- Open Access
Non-supersymmetric smooth geometries and D1-D5-P bound states
We construct smooth non-supersymmetric soliton solutions with D1-brane, D5-brane and momentum charges in type IIB supergravity compactified on T^4 x S^1, with the charges along the compact directions. This generalises previous studies of smooth supersymmetric solutions. The solutions are obtained by considering a known family of U(1) x U(1) invariant metrics, and studying the conditions imposed by requiring smoothness. We discuss the relation of our solutions to states in the CFT describing the D1-D5 system, and describe various interesting features of the geometry.
Open AccessNon-supersymmetric smooth geometries and D1-D5-P bound states
We construct smooth non-supersymmetric soliton solutions with D1-brane, D5-brane and momentum charges in type IIB supergravity compactified on T^4 x S^1, with the charges along the compact directions. This generalises previous studies of smooth supersymmetric solutions. The solutions are obtained by considering a known family of U(1) x U(1) invariant metrics, and studying the conditions imposed by requiring smoothness. We discuss the relation of our solutions to states in the CFT describing the D1-D5 system, and describe various interesting features of the geometry.
- 24 June 2005
- Published by American Physical Society (APS) in Physical Review D
- Vol. 71 (12) , 124030
Nonsupersymmetric smooth geometries and D1-D5-P bound states
We construct smooth nonsupersymmetric soliton solutions with D1-brane, D5-brane, and momentum charges in type IIB supergravity compactified on , with the charges along the compact directions. This generalizes previous studies of smooth supersymmetric solutions. The solutions are obtained by considering a known family of invariant metrics, and studying the conditions imposed by requiring smoothness. We discuss the relation of our solutions to states in the CFT describing the D1-D5 system and describe various interesting features of the geometry.- 24 June 2005
- Published by American Physical Society (APS) in Physical Review D
- Vol. 71 (12) , 124030
Nonsupersymmetric smooth geometries and D1-D5-P bound states
We construct smooth nonsupersymmetric soliton solutions with D1-brane, D5-brane, and momentum charges in type IIB supergravity compactified on , with the charges along the compact directions. This generalizes previous studies of smooth supersymmetric solutions. The solutions are obtained by considering a known family of invariant metrics, and studying the conditions imposed by requiring smoothness. We discuss the relation of our solutions to states in the CFT describing the D1-D5 system and describe various interesting features of the geometry.- Open Access
On uniqueness of charged Kerr-AdS black holes in five dimensions
We show that the solutions describing charged rotating black holes in five-dimensional gauged supergravities found recently by Cvetic, Lu and Pope [hep-th/0406196,hep-th/0407058] are completely specified by the mass, charges and angular momentum. The additional parameter appearing in these solutions is removed by a coordinate transformation and redefinition of parameters. Thus, the apparent hair in these solutions is unphysical.
Open AccessOn uniqueness of charged Kerr-AdS black holes in five dimensions
We show that the solutions describing charged rotating black holes in five-dimensional gauged supergravities found recently by Cvetic, Lu and Pope [hep-th/0406196,hep-th/0407058] are completely specified by the mass, charges and angular momentum. The additional parameter appearing in these solutions is removed by a coordinate transformation and redefinition of parameters. Thus, the apparent hair in these solutions is unphysical.
- 19 July 2004
- Published by American Physical Society (APS) in Physical Review D
- Vol. 70 (2) , 026002
Quotients of anti–de Sitter space
We study the quotients of -dimensional anti–de Sitter space by one-parameter subgroups of its isometry group for general n. We classify the different quotients up to conjugation by We find that the majority of the classes exist for all There are two special classes which appear in higher dimensions: one for and one for The description of the quotient in the majority of cases is thus a simple generalization of the quotients.- 19 July 2004
- Published by American Physical Society (APS) in Physical Review D
- Vol. 70 (2) , 026002
Quotients of anti–de Sitter space
We study the quotients of -dimensional anti–de Sitter space by one-parameter subgroups of its isometry group for general n. We classify the different quotients up to conjugation by We find that the majority of the classes exist for all There are two special classes which appear in higher dimensions: one for and one for The description of the quotient in the majority of cases is thus a simple generalization of the quotients.- Open Access
Quotients of anti-de Sitter space
We study the quotients of n+1-dimensional anti-de Sitter space by one-parameter subgroups of its isometry group SO(2,n) for general n. We classify the different quotients up to conjugation by O(2,n). We find that the majority of the classes exist for all n \geq 2. There are two special classes which appear in higher dimensions: one for n \geq 3 and one for n \geq 4. The description of the quotient in the majority of cases is thus a simple generalisation of the AdS_3 quotients.
Open AccessQuotients of anti-de Sitter space
We study the quotients of n+1-dimensional anti-de Sitter space by one-parameter subgroups of its isometry group SO(2,n) for general n. We classify the different quotients up to conjugation by O(2,n). We find that the majority of the classes exist for all n \geq 2. There are two special classes which appear in higher dimensions: one for n \geq 3 and one for n \geq 4. The description of the quotient in the majority of cases is thus a simple generalisation of the AdS_3 quotients.
- 28 June 2004
- Published by American Physical Society (APS) in Physical Review D
- Vol. 69 (12) , 124026
Quotients ofCausally well-behaved spaces and black holesStarting from the recent classification of quotients of Freund-Rubin backgrounds in string theory of the type by one-parameter subgroups of isometries, we investigate the physical interpretation of the associated quotients by discrete cyclic subgroups. We establish which quotients have well-behaved causal structures, and of those containing closed timelike curves, which have interpretations as black holes. We explain the relation to previous investigations of quotients of asymptotically flat spacetimes and plane waves, of black holes in AdS spacetimes, and of Gödel-type universes.- 28 June 2004
- Published by American Physical Society (APS) in Physical Review D
- Vol. 69 (12) , 124026
Quotients ofCausally well-behaved spaces and black holesStarting from the recent classification of quotients of Freund-Rubin backgrounds in string theory of the type by one-parameter subgroups of isometries, we investigate the physical interpretation of the associated quotients by discrete cyclic subgroups. We establish which quotients have well-behaved causal structures, and of those containing closed timelike curves, which have interpretations as black holes. We explain the relation to previous investigations of quotients of asymptotically flat spacetimes and plane waves, of black holes in AdS spacetimes, and of Gödel-type universes.- Open Access
Quotients of AdS_{p+1} x S^q: causally well-behaved spaces and black holes
Starting from the recent classification of quotients of Freund--Rubin backgrounds in string theory of the type AdS_{p+1} x S^q by one-parameter subgroups of isometries, we investigate the physical interpretation of the associated quotients by discrete cyclic subgroups. We establish which quotients have well-behaved causal structures, and of those containing closed timelike curves, which have interpretations as black holes. We explain the relation to previous investigations of quotients of asymptotically flat spacetimes and plane waves, of black holes in AdS and of Godel-type universes.
Open AccessQuotients of AdS_{p+1} x S^q: causally well-behaved spaces and black holes
Starting from the recent classification of quotients of Freund--Rubin backgrounds in string theory of the type AdS_{p+1} x S^q by one-parameter subgroups of isometries, we investigate the physical interpretation of the associated quotients by discrete cyclic subgroups. We establish which quotients have well-behaved causal structures, and of those containing closed timelike curves, which have interpretations as black holes. We explain the relation to previous investigations of quotients of asymptotically flat spacetimes and plane waves, of black holes in AdS and of Godel-type universes.