Ruben Manvelyan
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Previous Organizations / Institutes
The organizations / institutes from the scholar's other articles in the past ten years
Research Subjects
Ruben Manvelyan has a total of 13 co-authors. Here are the top co-authors by number of shared publications:
- Harald J. W. Mueller-Kirsten
Department of Physics University of Kaiserslautern D-67653 Kaiserslautern Germany
6 shared publications - Karapet Mkrtchyan
Imperial College London
5 shared publications - R. Mkrtchyan
Theoretical Physics Department Yerevan Physics Institute Alikhanian Br. St.2 375036 Yerevan Armenia
4 shared publications - Anastasios C. Petkou
Aristotle University of Thessaloniki
3 shared publications - Werner Ruehl
Department of Physics Erwin Schrödinger Straße Technical University of Kaiserslautern 3049 67653 Postfach Kaiserslautern Germany
3 shared publications - D. H. Tchrakian
Department of Mathematical Physics National University of Ireland Maynooth Maynooth Ireland
2 shared publications
Latest Publications
- Open Access
On Higher Spin Symmetries in AdS_{5}
A special embedding of the SU(4) algebra in SU(10), including both spin two and spin three symmetry generators, is constructed. A possible five dimensional action for massless spin two and three fields with cubic interaction is constructed. The connection with the previously investigated higher spin theories in $AdS_{5}$ background is discussed. Generalization to the more general case of symmetries, including spins $2,3,\dots s$, is shown.Open AccessOn Higher Spin Symmetries in AdS_{5}
A special embedding of the SU(4) algebra in SU(10), including both spin two and spin three symmetry generators, is constructed. A possible five dimensional action for massless spin two and three fields with cubic interaction is constructed. The connection with the previously investigated higher spin theories in $AdS_{5}$ background is discussed. Generalization to the more general case of symmetries, including spins $2,3,\dots s$, is shown. - Open Access
On Nonlinear Higher Spin Curvature
We present the first nonlinear term of the higher spin curvature which is covariant with respect to deformed gauge transformations that are linear in the field. We consider in detail the case of spin 3 after presenting spin 2 as an example, and then construct the general spin s quadratic term of the deWit-Freedman curvature.
Open AccessOn Nonlinear Higher Spin Curvature
We present the first nonlinear term of the higher spin curvature which is covariant with respect to deformed gauge transformations that are linear in the field. We consider in detail the case of spin 3 after presenting spin 2 as an example, and then construct the general spin s quadratic term of the deWit-Freedman curvature.
- Open Access
- 9 May 2011
- Published by Elsevier in Physics Letters B
- Vol. 699 (3) , 187-191
On nonlinear higher spin curvature
- 9 May 2011
- Published by Elsevier in Physics Letters B
- Vol. 699 (3) , 187-191
Open AccessOn nonlinear higher spin curvature
- Open Access
Conformal invariant interaction of a scalar field with the higher spin field in AdS_{D}
The explicit form of linearized gauge invariant interactions of scalar and general higher even spin fields in the $AdS_{D}$ space is obtained. In the case of general spin $\ell$ a generalized 'Weyl' transformation is proposed and the corresponding 'Weyl' invariant action is constructed. In both cases the invariant actions of the interacting higher even spin gauge field and the scalar field include the whole tower of invariant actions for couplings of the same scalar with all gauge fields of smaller even spin. For the particular value of $\ell=4$ all results are in exact agreement with hep-th/0403241Open AccessConformal invariant interaction of a scalar field with the higher spin field in AdS_{D}
The explicit form of linearized gauge invariant interactions of scalar and general higher even spin fields in the $AdS_{D}$ space is obtained. In the case of general spin $\ell$ a generalized 'Weyl' transformation is proposed and the corresponding 'Weyl' invariant action is constructed. In both cases the invariant actions of the interacting higher even spin gauge field and the scalar field include the whole tower of invariant actions for couplings of the same scalar with all gauge fields of smaller even spin. For the particular value of $\ell=4$ all results are in exact agreement with hep-th/0403241 - Open Access
Conformal invariant powers of the Laplacian, Fefferman-Graham ambient metric and Ricci gauging
The hierarchy of conformally invariant k-th powers of the Laplacian acting on a scalar field with scaling dimensions $\Delta_{(k)}=k-d/2$, k=1,2,3 as obtained in the recent work [1] is rederived using the Fefferman-Graham d+2 dimensional ambient space approach. The corresponding mysterious "holographic" structure of these operators is clarified. We explore also the d+2 dimensional ambient space origin of the Ricci gauging procedure proposed by A. Iorio, L. O'Raifeartaigh, I. Sachs and C. Wiesendanger as another method of constructing the Weyl invariant Lagrangians. The corresponding \emph{gauged} ambient metric, Fefferman-Graham expansion and extended Penrose-Brown-Henneaux transformations are proposed and analyzed.Open AccessConformal invariant powers of the Laplacian, Fefferman-Graham ambient metric and Ricci gauging
The hierarchy of conformally invariant k-th powers of the Laplacian acting on a scalar field with scaling dimensions $\Delta_{(k)}=k-d/2$, k=1,2,3 as obtained in the recent work [1] is rederived using the Fefferman-Graham d+2 dimensional ambient space approach. The corresponding mysterious "holographic" structure of these operators is clarified. We explore also the d+2 dimensional ambient space origin of the Ricci gauging procedure proposed by A. Iorio, L. O'Raifeartaigh, I. Sachs and C. Wiesendanger as another method of constructing the Weyl invariant Lagrangians. The corresponding \emph{gauged} ambient metric, Fefferman-Graham expansion and extended Penrose-Brown-Henneaux transformations are proposed and analyzed. - Open Access
Conformal coupling of the scalar field with gravity in higher dimensions and invariant powers of the Laplacian
The hierarchy of conformally coupled scalars with the increasing scaling dimensions $\Delta_{k}=k-d/2$, $k=1,2,3,... $ connected with the $k$-th Euler density in the corresponding space-time dimensions $d\geq 2k$ is proposed. The corresponding conformal invariant Lagrangian with the $k$-th power of Laplacian for the already known cases $k=1,2$ is reviewed, and the subsequent case of $k=3$ is completely constructed and analyzed.Open AccessConformal coupling of the scalar field with gravity in higher dimensions and invariant powers of the Laplacian
The hierarchy of conformally coupled scalars with the increasing scaling dimensions $\Delta_{k}=k-d/2$, $k=1,2,3,... $ connected with the $k$-th Euler density in the corresponding space-time dimensions $d\geq 2k$ is proposed. The corresponding conformal invariant Lagrangian with the $k$-th power of Laplacian for the already known cases $k=1,2$ is reviewed, and the subsequent case of $k=3$ is completely constructed and analyzed. - 25 January 2007
- Published by Elsevier in Physics Letters B
- Vol. 644 (5-6) , 370-374
Conformal coupling of the scalar field with gravity in higher dimensions and invariant powers of the Laplacian
- 25 January 2007
- Published by Elsevier in Physics Letters B
- Vol. 644 (5-6) , 370-374
Conformal coupling of the scalar field with gravity in higher dimensions and invariant powers of the Laplacian
- Open Access
- 1 April 2005
- Published by Elsevier in Physics Letters B
- Vol. 613 (3-4) , 197-207
The masses of gauge fields in higher spin field theory on the bulk of AdS4
- 1 April 2005
- Published by Elsevier in Physics Letters B
- Vol. 613 (3-4) , 197-207
Open AccessThe masses of gauge fields in higher spin field theory on the bulk of AdS4
- 1 June 2001
- Published by Elsevier in Physics Letters B
- Vol. 509 (1-2) , 143-150
Holographic trace anomaly and cocycle of Weyl group
- 1 June 2001
- Published by Elsevier in Physics Letters B
- Vol. 509 (1-2) , 143-150
Holographic trace anomaly and cocycle of Weyl group
- Open Access
Holographic Trace Anomaly and Cocycle of Weyl Group
The behavior of the divergent part of the bulk AdS/CFT effective action is considered with respect to the special finite diffeomorphism transformations acting on the boundary as a Weyl transformation of the boundary metric. The resulting 1-cocycle of the Weyl group is in full agreement with the 1-cocycle of the Weyl group obtained from the cohomological consideration of the effective action of the corresponding CFT.
Open AccessHolographic Trace Anomaly and Cocycle of Weyl Group
The behavior of the divergent part of the bulk AdS/CFT effective action is considered with respect to the special finite diffeomorphism transformations acting on the boundary as a Weyl transformation of the boundary metric. The resulting 1-cocycle of the Weyl group is in full agreement with the 1-cocycle of the Weyl group obtained from the cohomological consideration of the effective action of the corresponding CFT.