Results 51 to 60 of about 4,774 (143)

Naturalness and dark matter in a realistic intersecting D6-brane model

Journal of High Energy Physics, 2018
We revisit a three-family Pati-Salam model with a realistic phenomenology from intersecting D6-branes in Type IIA string theory compactified on a T 6 /(ℤ2 × ℤ2) orientifold, and study its naturalness in view of the current LHC and dark matter searches ...
Waqas Ahmed, Lorenzo Calibbi, Tianjun Li, Shabbar Raza, Jia-Shu Niu, Xiao-Chuan Wang   +5 more
doaj   +1 more source

Bubble needs strings

Journal of High Energy Physics, 2021
In this paper, we want to emphasize the pivotal role played by strings in the model realizing de Sitter using an expanding bubble, proposed and subsequently developed in [1–3].
Souvik Banerjee, Ulf Danielsson, Suvendu Giri   +2 more
doaj   +1 more source

Building a St\"uckelberg Portal [PDF]

, 2014
We construct explicit string theory models realizing the recently proposed "St\"uckelberg Portal" scenario, a framework for building Z' mediation models without the need to introduce unwanted exotic matter charged under the Standard Model.
Feng, Wan-Zhe, Shiu, Gary, Soler, Pablo, Ye, Fang   +3 more
core   +3 more sources

Naturalness in D-brane inspired models

Journal of High Energy Physics, 2019
We examine the naturalness of the D-brane inspired model constructed in flipped SU(5) supplemented with vector-like particles at the TeV scale, dubbed flippons.
Ron De Benedetti, Tianjun Li, James A. Maxin, Dimitri V. Nanopoulos   +3 more
doaj   +1 more source

Constraining the string scale: from Planck to Weak and back again

, 2004
String and field theory ideas have greatly influenced each other since the so called second string revolution. We review this interrelation paying particular attention to its phenomenological implications.
Abel S A, Abel S A, Abel S A, Abel S A Lebedev O Santiago J, Abel S Schofield B, Aldazabal G, Aldazabal G, Allanach B C, Arkani-Hamed N, Arkani-Hamed N, Axenides M Floratos E Kokorelis C, Bachas C, Baek S, Baek S, Bailin D, Behrndt K Cvetic M, Benakli K, Blumenhagen R, Blumenhagen R, Blumenhagen R, Blumenhagen R, Bottino A, Carone C D, Cerdeno D G, Chamoun N Khalil S Lashin E, Cremades D, Cremades D, Cremades D, Cvetic M, Cvetic M, Cvetic M, Cvetic M, Cvetic M Papadimitriou I Shiu G, Cvetic M Shiu G Uranga A M, Davidson S, Davidson S, del Aguila F, Del Aguila F, Delgado A, Forste S, Gabrielli E, Garcia-Bellido J, Ghilencea D M, Gimon E G, Gomez-Reino M, Hagiwara K (Particle Data Group), Honecker G, Ibanez L E, Ibarra A, J Santiago, Johnson C V, Khalil S, Kokorelis C, Kokorelis C, Kokorelis C, Kokorelis C, Kokorelis C, Kokorelis C, Kokorelis C, Kokorelis C, Langacker P, Lust D Stieberger S, Owen A, Polchinski J, S Abel, Santiago J, Uranga A M, Uranga A M   +67 more
core   +1 more source

Dark bubbles: decorating the wall

Journal of High Energy Physics, 2020
Motivated by the difficulty of constructing de Sitter vacua in string theory, a new approach was proposed in arXiv:1807.01570 and arXiv:1907.04268 , where four dimensional de Sitter space was realized as the effective cosmology, with matter and radiation,
Souvik Banerjee, Ulf Danielsson, Suvendu Giri   +2 more
doaj   +1 more source

Superstring Phenomenology: An Overview

, 1997
The different aspects of superstring phenomenology before and after 1995 are briefly reviewed.
Banks, Brustein, Chun, de Carlos, Dine, Dine, Fernando Quevedo, Ferrara, Font, Ginsparg, Green, Hull, Kaku, Lüst, Rey, Schellekens, Witten, Witten   +17 more
core   +1 more source

FTheoryTools: Advancing Computational Capabilities for F‐Theory Research

Fortschritte der Physik, Volume 74, Issue 1, January 2026.
Abstract A primary goal of string phenomenology is to identify realistic four‐dimensional physics within the landscape of string theory solutions. In F‐theory, such solutions are encoded in the geometry of singular elliptic fibrations, whose study often requires particularly challenging and cumbersome computations.
Martin Bies, Miķelis E. Miķelsons, Andrew P. Turner   +2 more
wiley   +1 more source

Recombination of Intersecting D-branes by Local Tachyon Condensation

, 2003
We provide a simple low energy description of recombination of intersecting D-branes using super Yang-Mills theory. The recombination is realized by condensation of an off-diagonal tachyonic fluctuation localized at the intersecting point.
A. Bilal, A. Sen, A. Sen, A. Sen, A. Sen, A. Sen, A. Sen, A. Vilenkin, A.A. Tseytlin, A.A. Tseytlin, A.H. Guth, A.M. Uranga, A.M. Uranga, C. Bachas, C. Herdeiro, C. Kokorelis, D. Cremades, D.J. Gross, E. Witten, G. Aldazabal, H. Hata, J. Garcia-Bellido, J. Polchinski, K. Hashimoto, K. Hashimoto, K. Hashimoto, Koji Hashimoto, L.E. Ibáñez, M. Berkooz, M. Cvetic, M. Gomez-Reino, M. Gutperle, N. Ishibashi, N. Jones, N.T. Jones, P. Koerber, R. Blumenhagen, R. Blumenhagen, R. Blumenhagen, R. Blumenhagen, R. Blumenhagen, R. Blumenhagen, R. Brandenberger, S. Nagaoka, Satoshi Nagaoka, T. Banks   +45 more
core   +1 more source

Two Micron‐Size Dark Dimensions

Fortschritte der Physik, Volume 73, Issue 8, August 2025.
Abstract Two extra dimensions of micron scale might simultaneously address the gauge and cosmological hierarchy problems. In this paper various observational bounds in scenarios with one and two large extra dimensions are examined, to see if they are compatible with the micron scale.
Luis A. Anchordoqui, Ignatios Antoniadis, Dieter Lüst   +2 more
wiley   +1 more source