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- Mohsen Alishahiha, Hajar Ebrahim
- 2008

We study the entropy of non-supersymmetric extremal black holes which exhibit attractor mechanism by making use of the entropy function. This method, being simple, can be used to calculateâ€¦ (More)

We show that the three-qubit entanglement classes: (0) Null, (1) Separable A-B-C, (2a) Biseparable A-BC, (2b) Biseparable B-CA, (2c) Biseparable C-AB, (3) W and (4) GHZ correspond respectively toâ€¦ (More)

We review the recently established relationships between black hole entropy in string theory and the quantum entanglement of qubits and qutrits in quantum information theory. The first example isâ€¦ (More)

- Mohsen Alishahiha, Hajar Ebrahim
- 2006

By making use of the entropy function formalism we study the generalized attractor equations in the four dimensional N = 2 supergravity in the presence of higher order corrections. This result mightâ€¦ (More)

- Hajar Ebrahim, Amir E. Mosaffa
- 2005

We study semiclassical string solutions on the 1/2 BPS geometry of type IIB string theory characterized by concentric rings on the boundary plane. We consider both folded rotating strings carryingâ€¦ (More)

- Krishnamurti Dakshinamurti, J K Chauhan, Hajar Ebrahim
- Bioscience reports
- 1987

The uptake of biotin and biocytin was investigated in rat intestine using the everted sac technique. It has been shown that at biotin and biocytin concentrations less than 40 and 50 nM respectively,â€¦ (More)

- L. Borsten, Damayanthi Dahanayake, Mildred Duff, Hajar Ebrahim, Wilfred Rubens
- Physical review letters
- 2008

Recent work has established a correspondence between the tripartite entanglement measure of three qubits and the macroscopic entropy of the four-dimensional 8-charge STU black hole of supergravity.â€¦ (More)

- Mohsen Alishahiha, Hajar Ebrahim, Batool Safarzadeh, Mohammad M. Sheikh-Jabbari
- 2005

In the first part of this paper we study two Z2 symmetries of the LLM metric, both of which exchange black and white regions. One of them which can be interpreted as the particle-hole symmetry is theâ€¦ (More)

- Hajar Ebrahim
- 2006

We study little string theory on R1 Ã— S5, defined by a theory which lives on type IIA N NS5 branes wrapped on S5, using its supergravity dual. In particular we study semiclassical rotating closedâ€¦ (More)

- Hajar Ebrahim, Kirshnamurti Dakshinamurti
- Analytical biochemistry
- 1986

An assay for biotinidase using biocytin, the natural substrate, is described. The fluorometric procedure uses 1,2-diacetylbenzene which reacts selectively with lysine allowing its directâ€¦ (More)