Zobrazeno 1 - 10
of 269
pro vyhledávání: '"Iengo, R"'
Autor:
Calucci, G., Iengo, R.
We propose to use the change of the energy lost by ionization, measured by silicon detectors, before and after the passage through a bulk of dense matter, for unambiguously detecting highly massive single-charged particles, which could be produced at
Externí odkaz:
http://arxiv.org/abs/1512.06013
Autor:
Iengo, R.
We show how easy it is to get the Sommerfeld enhancement for a Yukawa potential, for definite partial waves, beyond the S wave analyzed in previous literature. In particular, we report results for the P wave (for which there is a resonant pattern and
Externí odkaz:
http://arxiv.org/abs/0903.0317
Autor:
Iengo, R.
Publikováno v:
JHEP 0905:024,2009
Assuming that two incoming annihilating particles interact by a generally massive attractive vector potential,we find, by taking the non-relativistic limit of the field theory ladder diagrams, that the complete annihilation amplitude A is equal to: t
Externí odkaz:
http://arxiv.org/abs/0902.0688
Publikováno v:
JHEP0608:079,2006
We develop the general formalism for joining, splitting and interconnection of closed and open strings. As an application, we study examples of fundamental cosmic string collisions leading to gravitational collapse. We find that the interconnection o
Externí odkaz:
http://arxiv.org/abs/hep-th/0606110
Autor:
Iengo, R., Russo, J. G.
Publikováno v:
JHEP 0204 (2002) 010
We show that the presence of finite-size monopoles can lead to a number of interesting physical processes involving quantum entanglement of charges. Taking as a model the classical solution of the N=2 SU(2) Yang-Mills theory, we study interaction bet
Externí odkaz:
http://arxiv.org/abs/hep-th/0201269
Autor:
Iengo, R., Ramachandran, R.
Publikováno v:
JHEP 0202 (2002) 017
We formulate the Landau problem in the context of the noncommutative analog of a surface of constant negative curvature, that is $AdS_2$ surface, and obtain the spectrum and contrast the same with the Landau levels one finds in the case of the commut
Externí odkaz:
http://arxiv.org/abs/hep-th/0111200
Using the D3-brane as the fundamental tool, we adress two aspects of D-branes physics. The first regards the interaction between two electromagnetic dual D-branes in 10 dimensions. In particular, we give a meaning to {\it both} even and odd spin stru
Externí odkaz:
http://arxiv.org/abs/hep-th/9810150
Publikováno v:
Int.J.Theor.Phys.38:1385-1397,1999
We explore the connection between D-branes and black holes in one particular case: a $D3$-brane compactified to four dimensions on $T^6/Z_3$. Using the $D$-brane boundary state description we show the equivalence with a double extremal N=2 black hole
Externí odkaz:
http://arxiv.org/abs/hep-th/9807209
Autor:
Acatrinei, C. S., Iengo, R.
Publikováno v:
Nucl.Phys. B539 (1999) 513-532
We study the pair production of open strings in constant electric fields, using a general framework which encodes both relativistic string theory and generic linearly extended systems as well. In the relativistically invariant case we recover previou
Externí odkaz:
http://arxiv.org/abs/hep-th/9806048
Publikováno v:
Phys.Lett. B355 (1995) 277-282
We compute the $\beta$-function of a YM theory, broken to $U(1)$, by evaluating the coupling constant renormalization in the broken phase. We perform the calculation in the unitary gauge where only physical particles appear and the theory looks like
Externí odkaz:
http://arxiv.org/abs/hep-th/9502085