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We determine the boundary states, associated with a fractional D$p$-brane in the presence of the Kalb-Ramond field and a $U(1)$ gauge potential. The background spacetime is the non-compact orbifold $ \mathbb{R}^{1, 21} \otimes \mathbb{R}^4/…

High Energy Physics - Theory · Physics 2022-10-05 Hamidreza Daniali , Davoud Kamani

We shall construct two boundary states which are corresponding to a dynamical fractional D$p$-brane in the presence of the fluxes of the Kalb-Ramond field and a $U(1)$ gauge potential, in the partially orbifold spacetime $\mathbb{R}^{1,…

High Energy Physics - Theory · Physics 2018-07-03 Shiva Heidarian , Davoud Kamani

We shall obtain the interaction of the D$p_1$- and D$p_2$-branes in the toroidal-orbifold spacetime $\mathit{T}^{n}\times\mathbb{R}^{1, d-n-5} \times\mathbb{C}^{2}/\mathbb{Z}_{2}$. The configuration of the branes is: non-intersecting,…

High Energy Physics - Theory · Physics 2017-07-25 Elham Maghsoodi , Davoud Kamani

Using the boundary state formalism we study a moving D$p$-brane in a partially compact spacetime in the presence of the background fields: Kalb-Ramond $B_{\mu\nu}$, a U(1) gauge field $A_{\alpha}$ and the tachyon field. The boundary state…

High Energy Physics - Theory · Physics 2020-08-21 Zahra Rezaei , Davoud Kamani

We obtain two boundary states corresponding to the two folds of a fractional-wrapped D$p$-brane, i.e. the twisted version under the orbifold $\mathbb{C}^{2}/\mathbb{Z}_{2}$ and the untwisted version. The brane has rotation and linear…

High Energy Physics - Theory · Physics 2017-07-31 Elham Maghsoodi , Davoud Kamani

We calculate the bosonic boundary state corresponding to a moving fractional D$p$-brane in a partially orbifoldized spacetime $\mathbb{R}^{1, d-5} \times\mathbb{C}^{2}/\mathbb{Z}_{2}$ in the presence of the Kalb-Ramond field, the $U(1)$…

High Energy Physics - Theory · Physics 2017-07-20 Maryam Saidy-Sarjoubi , Davoud Kamani

In this article we shall obtain the boundary state associated with a moving $Dp$-brane in the presence of the Kalb-Ramond field $B_{\mu\nu}$, an internal U(1) gauge field $A_{\alpha}$ and a tachyon field, in the compact spacetime. According…

High Energy Physics - Theory · Physics 2020-08-21 Zahra Rezaei , Davoud Kamani

Using the boundary state formalism we study rotating and moving D$p$-branes in the presence of the following background fields: Kalb-Ramond, $U(1)$ gauge potential and the tachyon field. The rotation and motion are in the brane volumes. The…

High Energy Physics - Theory · Physics 2014-11-12 Farzin Safarzadeh-Maleki , Davoud Kamani

At first, we derive a boundary state, associated with a moving D$p$-brane, in the presence of the Kalb-Ramond field and a $U(1)$ gauge potential. Then, from the interaction of such D$p$-branes, we obtain the radiation amplitude for a…

High Energy Physics - Theory · Physics 2023-01-30 Hamidreza Daniali , Davoud Kamani

We shall construct the Dirac-Born-Infeld like and the Wess-Zumino like actions for a dynamical D$p$-brane with the $U(1)$ gauge potential and the Kalb-Ramond background field. The brane dynamics simultaneously has both tangential and…

High Energy Physics - Theory · Physics 2019-03-29 Shiva Heidarian , Davoud Kamani

We introduce a boundary state which is corresponding to a D$p$-brane with tangential dynamics in the presence of the Kalb-Ramond field, a tachyonic field and a $U(1)$ gauge potential in a special gauge. From the interaction of such branes…

High Energy Physics - Theory · Physics 2022-02-23 Hamidreza Daniali , Davoud Kamani

We apply the boundary state method and operator formalism to obtain tree-level scattering amplitude of the Kalb-Ramond state from a D$p$-brane. The brane has a tangential dynamics, and it has been dressed by the antisymmetric tensor field,…

High Energy Physics - Theory · Physics 2019-04-22 Davoud Kamani , Elham Maghsoodi

In the context of the superstring theory, we calculate the radiation amplitude of a general massless closed string from the interaction of two parallel D$p$-branes. The background field is the constant antisymmetric tensor $B_{\mu\nu}$, and…

High Energy Physics - Theory · Physics 2022-12-26 Hamidreza Daniali , Davoud Kamani

Using the boundary string field theory (BSFT) techniques we study the boundary state and partition function for a dynamical (rotating-moving) D$p$-brane coupled to the electromagnetic and tachyonic background fields in superstring theory.…

High Energy Physics - Theory · Physics 2018-05-08 Farzin Safarzadeh-Maleki

We compute the boundary state associated with a moving D$p$-brane in the presence of the open string tachyon field as a background field. The effect of the tachyon condensation on the boundary state will be discussed. It leads to a boundary…

High Energy Physics - Theory · Physics 2020-08-21 Zahra Rezaei , Davoud Kamani

The Kalb-Ramond action, derived for interacting strings through an action-at-a-distance force, is generalized to the case of interacting p-dimensional objects (p-branes) in D-dimensional space-time. The open p-brane version of the theory is…

High Energy Physics - Theory · Physics 2015-06-26 Sumio Ishikawa , Yasuhiro Iwama , Tadashi Miyazaki , Motowo Yamanobe

We calculate the bosonic boundary state associated with a rotating and moving D$p$-brane in the presence of the antisymmetric tensor field, a $U(1)$ gauge field and a tachyon field. Rotation and motion are in the brane volume. We…

High Energy Physics - Theory · Physics 2014-01-16 Farzin Safarzadeh-Maleki , Davoud Kamani

We employ the boundary state formalism to compute the pair creation rate of the open superstrings from the interaction of two parallel D3-branes. The branes live in the partially compact spacetime. In addition, they have been dressed with…

High Energy Physics - Theory · Physics 2023-08-14 Niloufar Barghi-Janyar , Davoud Kamani

In this article we consider two $m1$-branes at angle in the presence of the background electric fields, in a partially compact spacetime. The branes have motions along a common direction that is perpendicular to both of them. Using the…

High Energy Physics - Theory · Physics 2020-08-21 Davoud Kamani , Niloufar Nowrouzi

$D$-brane boundary states for type II superstrings are constructed by enforcing the conditions that preserve half of the space-time supersymmetry. A light-cone coordinate frame is used where time is identified as one of the coordinates…

High Energy Physics - Theory · Physics 2009-10-30 Michael B. Green , Michael Gutperle
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