426 citations · 3.4k across the 63 of their papers we have counts for
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Branes and the Gauge Hierarchy
I. Antoniadis, C. Bachas
If the fundamental type-I string scale is of the order of few TeV, the problem of the gauge hierarchy is that of understanding why some dimensions transverse to our brane-world are…
Unification with Low String Scale
Constantin P. Bachas
I argue that in open-string theory with hierarchically small (or large) extra dimensions, gauge groups can unify naturally with logarithmically-running coupling constants at the hi…
Lectures on D-branes
Constantin P. Bachas
This is an introduction to the physics of D-branes. Topics covered include Polchinski's original calculation, a critical assessment of some duality checks, D-brane scattering, and…
A Classical Manifestation of the Pauli Exclusion Principle
C. P. Bachas, M. B. Green
The occupied and unoccupied fermionic BPS quantum states of a type-IIA string stretched between a D6-brane and an orthogonal D2-brane are described in M-theory by two particular ho…
New String Excitations in the Two-Higgs Standard Model
C. Bachas, B. Rai, T. N. Tomaras
We establish the existence of a static, classically stable string solution in a region of parameters of the generic two-Higgs Standard Model. In an appropriate limit of parameters,…