38 citations · 100 across the 8 of their papers we have counts for
8 papers
New non-supersymmetric heterotic string theory with reduced rank and exponential suppression of the cosmological constant
Sota Nakajima
We study the heterotic asymmetric orbifold model in which supersymmetry is broken by the stringy Schark-Schwarz mechanism. This model is a natural non-supersymmetric extension of C…
On (Scalar QED) Gravitational Positivity Bounds
Yuta Hamada, Rinto Kuramochi, Gregory J. Loges +1
We study positivity bounds in the presence of gravity. We first review the gravitational positivity bound at the tree-level, where it is known that a certain amount of negativity i…
Order recognition by Schubert polynomials generated by optical near-field statistics via nanometre-scale photochromism
Kazuharu Uchiyama, Sota Nakajima, Hirotsugu Suzui +6
We have previously observed an irregular spatial distribution of photon transmission through a photochromic crystal photoisomerized by a local optical near-field excitation, manife…
Target Space Duality of Non-Supersymmetric String Theory
H. Itoyama, Yuichi Koga, Sota Nakajima
T-dualities of the non-supersymmetric string models, which are constructed by twisted compactifications, are investigated. We show that the T-duality groups of such models are obta…
Gauge Symmetry Enhancement by Wilson Lines in Twisted Compactification
H. Itoyama, Yuichi Koga, Sota Nakajima
We point out a simple realization of gauge symmetry enhancement by Wilson lines in QFT with twisted compactification in extra dimensions. We illustrate this in the field contents t…
Marginal deformations of heterotic interpolating models and exponential suppression of the cosmological constant
H. Itoyama, Sota Nakajima
Following our previous work of 1905.10745 [hep-th], 2003.11217 [hep-th], we study heterotic interpolating models dimensionally compactified with constant background fields that…
Stability, enhanced gauge symmetry and suppressed cosmological constant in 9D heterotic interpolating models
H. Itoyama, Sota Nakajima
We investigate the structure of the moduli space of 9D heterotic interpolating models with a complete set of Wilson line backgrounds and a radius parameter by computing the one-loo…
Exponentially suppressed cosmological constant with enhanced gauge symmetry in heterotic interpolating models
H. Itoyama, Sota Nakajima
A few nine-dimensional interpolating models with two parameters are constructed and the massless spectra are studied by considering compactification of heterotic strings on a twist…