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- Luca Dâ€™Errico, Wolfgang Mueck, Roberto Pettorino
- 2007

Amongst the class of supergravity solutions found by Lin, Lunin and Maldacena, we consider pure and mixed state configurations generated by phase space densities in the dual fermionic picture. Aâ€¦ (More)

We propose a new approach to four-dimensional Planckian-energy scattering in which the phase of the S-matrix is writtenâ€”to leading order in Â¯ h and to all orders in R/b = Gs/Jâ€” in terms of theâ€¦ (More)

We study a bound state of fractional D3-branes localized inside the world-volume of fractional D7-branes on the orbifold C3/(Z2 Ã— Z2). We determine the open string spectrum that leads to N = 1 U(N1)â€¦ (More)

We give a simple prescription for computing, in the framework of the bosonic string theory, off-shell one-loop amplitudes with any number of external massless particles, for both the open and theâ€¦ (More)

We give, in the framework of the bosonic string theory, simple prescriptions for computing, at tree and one-loop levels, off-shell string amplitudes for open and closed string massless states. Inâ€¦ (More)

- Francesco Cuomo, Raffaele Marotta, F. Nicodemi, Roberto Pettorino, F. Pezzella, Gianluca Sabella
- 2000

We compute off-shell threeand four-tachyon amplitudes at tree level by using a prescription based on the requirement of projective invariance. In particular we show that the off-shell four tachyonâ€¦ (More)

We study a bound state of fractional D3-branes localized inside the world-volume of fractional D7-branes on the orbifold C3/(Z2 Ã— Z2). We determine the open string spectrum that leads to N = 1 U(N1)â€¦ (More)

We give a simple prescription for computing, in the framework of the bosonic string theory, off-shell one-loop amplitudes with any number of external massless particles, both for the open and for theâ€¦ (More)

- L S Bizer, Roberto Pettorino, Andrew Y Ashikari
- Journal of the American College of Surgeons
- 1995

BACKGROUND
We have previously shown high morbidity and mortality rates in patients with acquired immunodeficiency syndrome (AIDS) who require emergency abdominal operations. In a larger series ofâ€¦ (More)

Rapidly moving sources create pairs in the vacuum and lose energy. In consequence of this, the velocity of a charged body cannot approach the speed of light closer than a certain limit which dependsâ€¦ (More)