Results 81 to 90 of about 138,935 (247)

Trotterless Simulation of Open Quantum Systems for NISQ Quantum Devices

Advanced Quantum Technologies, Volume 8, Issue 1, January 2025.
Open quantum systems exhibit complex dynamics that can be simulated on quantum computers to provide physical insights into their behavior. This work proposes a new method for simulating these systems that reduces the effect of noise and errors on modern quantum hardware.
Colin Burdine, Enrique P. Blair
wiley   +1 more source

The fate of (phantom) dark energy universe with string curvature corrections

, 2005
We study the evolution of (phantom) dark energy universe by taking into account the higher-order string corrections to Einstein-Hilbert action with a fixed dilaton.
Aguirregabiria, Alam, Alexeev, Alexey Toporensky, Alexeyev, Andrianov, Antoniadis, Aref'eva, Aref'eva, Avelino, Babichev, Babichev, Bauer, Bento, Bento, Bouhmadi-Lopez, Boulware, Brevik, Brito, Brustein, Calcagni, Calcagni, Caldwell, Caldwell, Carroll, Carroll, Cartier, Chimento, Chimento, Copeland, Corasaniti, Csaki, Dabrowski, Elizalde, Feinstein, Feng, Feng, Foffa, Gonzalez-Diaz, Gonzalez-Diaz, Gonzalez-Diaz, Gonzalez-Diaz, Gumjudpai, Guo, Hannestad, Hao, Hao, Hossain, Hoyle, Hoyle, Hoyle, Hoyle, Hoyle, Izquierdo, Johri, Kanti, Kawai, Kim, Lima, Lu, Lu, M. Sami, Maeda, Maeda, McInnes, McInnes, McInnes, Melchiorri, Meng, Narlikar, Neupane, Nojiri, Nojiri, Nojiri, Nojiri, Nojiri, Nojiri, Nojiri, Nojiri, Nojiri, Nojiri, Ohta, Onemli, Perivolaropoulos, Peter V. Tretjakov, Piao, Piazza, Pomazanov, Rizos, Sahni, Sahni, Sami, Shinji Tsujikawa, Singh, Starobinsky, Stefancic, Stefancic, Toporensky, Torii, Torres, Tsujikawa, Tsujikawa, Tsujikawa, Tsujikawa, Vikman, Wei, Weller, Wu, Xia   +108 more
core   +1 more source

Strings Near a Rindler Or Black Hole Horizon [PDF]

, 1994
Orbifold techniques are used to study bosonic, type II and heterotic strings in Rindler space at integer multiples N of the Rindler temperature, and near a black hole horizon at integer multiples of the Hawking temperature, extending earlier results of ...
Andrew Strominger, B. Sathiapalan, C. Callan, C. Vafa, D. J. Gross, David A. Lowe, H. J. de Vega, H. J. de Vega, I. Klebanov, J. A. Bagger, J. J. Atick, J. L. F. Barbon, L. Alvarez Gaume, L. Dixon, L. Dixon, L. Susskind, M. Bañados, N. Sanchez, N. Seiberg, R. Hagedorn, V. P. Nair, Ya. I. Kogan   +21 more
core   +2 more sources

Harmonic balls in Liouville quantum gravity

Proceedings of the London Mathematical Society, Volume 130, Issue 1, January 2025.
Abstract Harmonic balls are domains that satisfy the mean‐value property for harmonic functions. We establish the existence and uniqueness of harmonic balls on Liouville quantum gravity (LQG) surfaces using the obstacle problem formulation of Hele–Shaw flow.
Ahmed Bou‐Rabee, Ewain Gwynne
wiley   +1 more source

Torus bundles, automorphisms and T-duality

Journal of High Energy Physics, 2021
We reconsider some older constructions of T-duality, based on automorphisms of the worldsheet operator algebra, in a modern context. It has been long known that at special points in the moduli space of torus compactifications, the target space gauge ...
H. Mahmood, R. A. Reid-Edwards
doaj   +1 more source

Statistical transmutation of quantum bosonic strings coupled to general four-dimensional Chern-Simons theory

, 2002
A bosonic string coupled to the generalized Chern-Simons theory in 3+1D acquires a magnetic field along itself, when it is closed, and a topological charge at its extremity, when it is open.
E. C. Marino, E. Cremer, E.C. Marino, E.C. Marino, E.C. Marino, E.C. Marino, E.C. Marino, E.C. Marino, G. ’t Hooft, H. Fort, J. Barcelos-Neto, J. Barcelos-Neto, L.P. Kadanoff, R. Gambini, X. Fustero   +14 more
core   +1 more source

Strings in AdS_3 and the SL(2,R) WZW Model. Part 1: The Spectrum [PDF]

, 2000
In this paper we study the spectrum of bosonic string theory on AdS_3. We study classical solutions of the SL(2,R) WZW model, including solutions for long strings with non-zero winding number.
Balog J., Bars I., Bars I., Brower R. C., de Boer J., de Vega H. J., Dijkgraaf R., Dixon L. J., Dorn H., Evans J. M., Gepner D., Gepner D., Giribet G., Giveon A., Giveon A., Goddard P., Henningson M., Hirosi Ooguri, Hwang S., Hwang S., Hwang S., Juan Maldacena, Klebanov I. R., Kutasov D., Larsen A. L., Lykken J. D., Maldacena J., Maldacena J., Mohammedi N., Petropoulos P. M. S., Seiberg N., Teschner J., Zamolodchikov A. B.   +32 more
core   +3 more sources

Symmetries in the Hamiltonian Formulation of String Theory

Advances in High Energy Physics, Volume 2025, Issue 1, 2025.
In the context of the Hamiltonian formulation of string theory, a widely acknowledged issue is the inability of the first‐class constraints to accurately reproduce the Lagrangian symmetry transformations. We take a critical look at the Hamiltonian formulation of the Polyakov string and demonstrate, using Castellani′s procedure, that diffeomorphism and ...
Héctor A. Benítez, René Negrón, Xiao Yan Chew   +2 more
wiley   +1 more source

Worldsheet instantons and the amplitude for string pair production in an external field as a WKB exact functional integral

Journal of High Energy Physics, 2018
We revisit the problem of charged string pair creation in a constant external electric field. The string states are massive and creation of pairs from the vacuum is a tunnelling process, analogous to the Schwinger process where charged particle-anti ...
James Gordon, Gordon W. Semenoff
doaj   +1 more source

Zero Modes on Linked Strings

, 1994
We study linked loops of string in the presence of bosonic condensates and fermionic zero modes on the strings. We find that the strings necessarily carry a current if the bosons have an Aharanov-Bohm interaction with the string.
Barriola, Bogomolnyi, Cheng, de Vega, di Vecchia, Earnshaw, Einhorn, Garfinkle, Garriga, Gipson, Goldstone, Gradshteyn, Huang, Jackiw, James, Jaume Garriga, Letelier, Manton, Manton, Nambu, Nielsen, Soni, Tanmay Vachaspati, Vachaspati, Vachaspati, Vachaspati, Vachaspati, Vachaspati, Weinberg, Witten   +29 more
core   +2 more sources