Results 81 to 90 of about 9,239 (185)

Supercoset CFT's for String Theories on Non-compact Special Holonomy Manifolds [PDF]

, 2003
We study aspects of superstring vacua of non-compact special holonomy manifolds with conical singularities constructed systematically using soluble N = 1 superconformal field theories (SCFT's).
Acharya, Aharony, Aharony, Aloff, Argurio, Argurio, Aspinwall, Atiyah, Atiyah, Bars, Berenstein, Berkovits, Berkovits, Berkovits, Berkovits, Berkovits, Blumenhagen, Blumenhagen, Boyer, Bryant, Bär, Callan, Callan, Cappelli, Cappelli, Castellani, Castellani, Castellani, Crnkovic, D'Auria, Dasgupta, Dasgupta, David, Di Francesco, Distler, Duff, Eguchi, Eguchi, Eguchi, Eguchi, Eguchi, Eguchi, Eguchi, Eguchi, Elitzur, Elitzur, Figueroa-O'Farrill, Figueroa-O'Farrill, Figueroa-O'Farrill, Friedrich, Friedrich, Friedrich, Galicki, Gates, Gepner, Gepner, Gepner, Ghoshal, Gibbons, Giveon, Giveon, Giveon, Giveon, Giveon, Gray, Gray, Greene, Gregory, Guadagnini, Guadagnini, Gubser, Gubser, Gukov, Gukov, Gukov, Gukov, Hikida, Hori, Ito, Joyce, Kato, Kazama, Klebanov, Knizhnik, Kutasov, Kutasov, Kutasov, Lerche, Maldacena, Mandal, Mizoguchi, Morrison, Naka, Noyvert, Odake, Odake, Ooguri, Page, Pando Zayas, Pelc, Roiban, Roiban, Romans, Sasaki, Satoshi Yamaguchi, Schwimmer, Seiberg, Sevrin, Shapere, Shatashvili, Strominger, Sugiyama, Sugiyama, Tohru Eguchi, Van Proeyen, Witten, Witten, Witten, Witten, Wolf, Yamaguchi, Yamaguchi, Yamaguchi, Yuji Sugawara   +123 more
core   +4 more sources

Alleviating trade‐off between responsivity and response speed of Ga2O3 solar‐blind photodetector via modulation of carrier redistribution and extraction accessibility

InfoMat, Volume 7, Issue 9, September 2025.
Ga2O3 photodetectors, particularly those dominated by the photoconductive effect, inevitably face a trade‐off between photoresponsivity and response speed. In this work, bilayer‐structure Ga2O3 films are adopted for solar‐blind photodetectors to alleviate the trade‐off between photoresponsivity and response speed.
Xiaolan Ma, Ying Zhang, Pengju Tan, Xiao Feng, Yiran Hao, Guangwei Xu, Xiaolong Zhao, Nan Gao, Xiaohu Hou, Qin Hu, Shibing Long   +10 more
wiley   +1 more source

Systematics of type IIA moduli stabilisation

Journal of High Energy Physics, 2020
We analyse the flux-induced scalar potential for type IIA orientifolds in the presence of p-form, geometric and non-geometric fluxes. Just like in the Calabi-Yau case, the potential presents a bilinear structure, with a factorised dependence on axions ...
Fernando Marchesano, David Prieto, Joan Quirant, Pramod Shukla   +3 more
doaj   +1 more source

Dark Dimension With (Little) Strings Attached

Fortschritte der Physik, Volume 73, Issue 4, April 2025.
Abstract A relation between dark energy and the scale of new physics in weakly coupled string theory is motivated. This mixing between infrared and ultraviolet physics leads to a unique corner for real‐world phenomenology: barring fine‐tunings, the authors are naturally led to the “dark dimension” scenario, a single mesoscopic extra dimension of micron
Ivano Basile, Dieter Lüst
wiley   +1 more source

String Theory Dynamics In Various Dimensions [PDF]

, 1995
The strong coupling dynamics of string theories in dimension $d\geq 4$ are studied. It is argued, among other things, that eleven-dimensional supergravity arises as a low energy limit of the ten-dimensional Type IIA superstring, and that a recently ...
Bars, Callan, Carr, Cremmer, Cremmer, Dabholkar, Dabholkar, Dai, Dine, Duff, Duff, Edward Witten, Gibbons, Ginsparg, Giveon, Hull, Huq, Julia, Kallosh, Nahm, Narain, Narain, Romans, Seiberg, Seiberg, Sen, Sen, Shenker, Strominger, Witten   +29 more
core   +3 more sources

Band Tailoring Enabled Perovskite Devices for X‐Ray to Near‐Infrared Photodetection

Advanced Science, Volume 12, Issue 9, March 6, 2025.
Perovskite‐based photodetectors are improved for wide‐spectrum detection X‐rays to near‐infrared using a type‐II heterojunction with tellurium. This design reduces dark current noise and enhances sensitivity, with a scalable sensor array showing promise for imaging applications.
Yi‐Chu He, Guan‐Hua Dun, Jun Deng, Jia‐Li Peng, Ken Qin, Jia‐He Zhang, Xiang‐Shun Geng, Min‐Shu Zhang, Ze‐Shu Wang, Yan Xie, Zhao‐Qiang Bai, Dan Xie, He Tian, Yi Yang, Tian‐Ling Ren   +14 more
wiley   +1 more source

Three Generations in Type I Compactifications [PDF]

, 1998
Generalizing the recent work on three-family Type I compactifications, we classify perturbative Type I vacua obtained via compactifying on the T^6/Z_2 X Z_2 X Z_3 orbifold with all possible Wilson lines. In particular, we concentrate on models with gauge
A. Dabholkar, A. Sagnotti, C. Angelantonj, C.G. Callan, C.G. Callan, D.C. Dunbar, E. Witten, E.G. Gimon, E.G. Gimon, G. Pradisi, G. Zwart, J. Dai, J. Lykken, J. Polchinski, J. Polchinski, J. Polchinski, M. Berkooz, M. Bianchi, M. Bianchi, N. Arkani-Hamed, N. Ishibashi, P. Hořava, P. Hořava, R.G. Leigh, S.-H. Henry Tye, S.M. Roy, S.M. Roy, Z. Bern, Z. Kakushadze, Z. Kakushadze, Z. Kakushadze, Z. Kakushadze, Zurab Kakushadze   +32 more
core   +3 more sources

On (scalar QED) gravitational positivity bounds

Journal of High Energy Physics, 2023
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 is allowed for the coefficients of higher-derivative operators. The size of
Yuta Hamada, Rinto Kuramochi, Gregory J. Loges, Sota Nakajima   +3 more
doaj   +1 more source

Notes on Characterizations of 2d Rational SCFTs: Algebraicity, Mirror Symmetry, and Complex Multiplication

Fortschritte der Physik, Volume 73, Issue 1-2, February 2025.
Abstract S. Gukov and C. Vafa proposed a characterization of rational N=(1,1)$N=(1,1)$ superconformal field theories (SCFTs) in 1+1$1+1$ dimensions with Ricci‐flat Kähler target spaces in terms of the Hodge structure of the target space, extending an earlier observation by G. Moore.
Abhiram Kidambi, Masaki Okada, Taizan Watari   +2 more
wiley   +1 more source

Inflation with a graceful exit in a random landscape

Journal of High Energy Physics, 2017
We develop a stochastic description of small-field inflationary histories with a graceful exit in a random potential whose Hessian is a Gaussian random matrix as a model of the unstructured part of the string landscape.
F. G. Pedro, A. Westphal
doaj   +1 more source