Výsledky vyhledávání - "string: coupling"

Akademický článek

Axial-torsional coupling vibration model and nonlinear behavior of drill string system in oil and gas wells

Autor: Guo, Xiaoqiang ^{a, ⁎}, Qiu, Zhichen ^a, Li, Mingming ^a, Li, Xinye ^{a, ⁎}, Hu, Ning ^a, Zhao, Libin ^{a, b, c}, Ye, Chengyang ^d

Publikováno v: In Communications in Nonlinear Science and Numerical Simulation March 2025 142

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Akademický článek

Prediction of the wellhead uplift caused by HT–HP oil and gas production in deep-water wells

Autor: Shuangjin Zheng, Wei Li, Chenguang Cao, Chao Wang

Publikováno v: Energy Reports, Vol 7, Iss , Pp 740-749 (2021)

In the oil and gas production process in deep-water high-temperature–high-pressure (HT–HP) wells, the occurrence of wellhead uplift is often induced by the heat carried by oil and gas flow from the well bottom to the wellhead. This directly leads

Externí odkaz: https://doaj.org/article/34415d28fe7045a1a729085f4c6c5e2a

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Exact Large Charge in $\mathcal{N}=4$ SYM and Semiclassical String Theory

Autor: Paul, Hynek, Perlmutter, Eric, Raj, Himanshu

In four-dimensional $\mathcal{N}=4$ super Yang-Mills theory with gauge group $SU(N)$, we present a closed-form solution for a family of integrated four-point functions involving stress tensor multiplet composites of arbitrary R-charge. These integrat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::60435d3d1df164dad3115b9ce88a8512

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On warped string vacuum profiles and cosmologies. Part I. Supersymmetric strings

Autor: J. Mourad, A. Sagnotti

Publikováno v: JHEP
JHEP, 2021, 12, pp.137. ⟨10.1007/JHEP12(2021)137⟩
Journal of High Energy Physics
Journal of High Energy Physics, 2021, 12, pp.137. ⟨10.1007/JHEP12(2021)137⟩
Journal of High Energy Physics, Vol 2021, Iss 12, Pp 1-54 (2021)

We investigate in detail solutions of supergravity that involve warped products of flat geometries of the type M(p+1) x R x T(D-p-2) depending on a single coordinate. In the absence of fluxes, the solutions include flat space and Kasner-like vacua th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a7d9343945ffe91c49b09ee91df859d2
https://doi.org/10.1007/jhep12(2021)137

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Akademický článek

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Swampland, Gradient Flow and Infinite Distance

Autor: Dieter Lust, Alex Kehagias, Severin Lüst

Publikováno v: JHEP
JHEP, 2020, 04, pp.170. ⟨10.1007/JHEP04(2020)170⟩
Journal of High Energy Physics
Journal of High Energy Physics, 2020, 04, pp.170. ⟨10.1007/JHEP04(2020)170⟩
Journal of High Energy Physics, Vol 2020, Iss 4, Pp 1-39 (2020)

In the first part of this paper we will work out a close and so far not yet noticed correspondence between the swampland approach in quantum gravity and geometric flow equations in general relativity, most notably the Ricci flow. We conjecture that f

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0779f1528387e77cecb16d7ef108b336
https://hal.archives-ouvertes.fr/hal-02338393

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One-loop bosonic string and de Sitter space

Autor: Dimitrios Tsimpis, Sabine Harribey

Publikováno v: Nuclear Physics B, Vol 948, Iss, Pp-(2019)
Nucl.Phys.B
Nucl.Phys.B, 2019, 948, pp.114768. ⟨10.1016/j.nuclphysb.2019.114768⟩
Nuclear Physics

We calculate the bosonic string one-loop three- and four-point amplitudes to quadradic order in momentum, and we read off the one-loop low-energy two-derivative effective action for the massless fields, $S_{eff}$. Treating the renormalized one-loop v

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fe57293bddde1bdb0c3df82aa58ce236
http://www.sciencedirect.com/science/article/pii/S0550321319302548

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Consistent truncation and de Sitter space from gravitational instantons

Autor: Dimitrios Tsimpis, Robin Terrisse

Publikováno v: JHEP
JHEP, 2019, 07, pp.034. ⟨10.1007/JHEP07(2019)034⟩
Journal of High Energy Physics, Vol 2019, Iss 7, Pp 1-26 (2019)
Journal of High Energy Physics

We construct a four-dimensional consistent truncation to the bosonic part of the universal sector of Calabi-Yau IIA compactification (i.e. the gravity multiplet, one vectormultiplet, and one hypermultiplet) in the presence of background flux and ferm

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7edec7d906e36ab907a0f52dfffa379e
http://arxiv.org/abs/1903.10504

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Modelling of sympathetic string vibrations in the clavichord using a modal Udwadia-Kalaba formulation

Autor: Jose Antunes, Jean-Théo Jiolat, Christophe d'Alessandro, J.-L. Le Carrou

Publikováno v: Proceedings of the 37th IMAC, A Conference and Exposition on Structural Dynamics 2019
SEM. Proceedings of the 37th IMAC, A Conference and Exposition on Structural Dynamics 2019, 3, Springer, pp.277-280, 2019, Model Validation and Uncertainty Quantification
HAL
Model Validation and Uncertainty Quantification, Volume 3 ISBN: 9783030120740

International audience; The vibratory and acoustic modeling of musical instruments is important for several purposes in cultural heritage preservation, performance studies and musical creation. On the one hand, building a model helps understanding th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::02020947d62597ca611282b1c988e7ce
https://hal.archives-ouvertes.fr/hal-02197017/document

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On the weak gravity conjecture in string theory with broken supersymmetry

Autor: Emilian Dudas, Quentin Bonnefoy, Severin Lüst

Publikováno v: Nuclear Physics
Nuclear Physics B
Nuclear Physics B, 2019, 947, pp.UNSP 114738. ⟨10.1016/j.nuclphysb.2019.114738⟩
Nuclear Physics B, Vol 947, Iss, Pp-(2019)
Nuclear Physics B, Elsevier, 2019, 947, pp.UNSP 114738. ⟨10.1016/j.nuclphysb.2019.114738⟩
Nucl.Phys.B
Nucl.Phys.B, 2019, 947, pp.114738
HAL

We use type I string models with supersymmetry broken by compactification (\`a la Scherk-Schwarz) in order to test the weak gravity conjecture in the presence of runaway potentials in a perturbative string theory setting. For a finite value of the su

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6da5d44cdb4f3cc4b6a0d52ea78253fe
http://arxiv.org/abs/1811.11199

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