Results 21 to 30 of about 13,707 (117)

Triangle Anomalies from Einstein Manifolds

, 2006
The triangle anomalies in conformal field theory, which can be used to determine the central charge a, correspond to the Chern-Simons couplings of gauge fields in AdS under the gauge/gravity correspondence. We present a simple geometrical formula for the
Benvenuti, Sergio, Tachikawa, Yuji, Zayas, Leopoldo A. Pando   +2 more
core   +3 more sources

Bohm and Einstein-Sasaki Metrics, Black Holes and Cosmological Event Horizons [PDF]

, 2002
We study physical applications of the Bohm metrics, which are infinite sequences of inhomogeneous Einstein metrics on spheres and products of spheres of dimension 5
A. Bergman, C. Bohm, C. Bohm, C. N. Pope, C. P. Boyer, C. P. Boyer, D. L. Wiltshire, D. N. Page, D. N. Page, G. W. Gibbons, G. W. Gibbons, G. W. Gibbons, G. W. Gibbons, G. W. Gibbons, G. W. Gibbons, G. W. Gibbons, G. W. Gibbons, G. W. Gibbons, G. W. Gibbons, H. Friedrich, H. S. Reall, J. P. Gregory, L. Mezincescu, M. A. Singer, M. J. Duff, M. J. Gursky, O. DeWolfe, P. Breitenlohner, R. L. Bishop, S. A. Hartnoll, S. B. Giddings, S. Dimopoulos, S. S. Gubser, S. W. Hawking, Sean A. Hartnoll, T. Prestige   +35 more
core   +3 more sources

Designing Governance for ESG: Incentive and Oversight Complementarities in Corporate Sustainability Performance

Corporate Social Responsibility and Environmental Management, EarlyView.
ABSTRACT This study investigates how internal governance design supports credible ESG performance by distinguishing between Incentive and Oversight Architectures. Using 13,993 firm‐year observations of US nonfinancial firms from 2018 to 2024, we estimate fixed effects and two‐step system GMM models.
Beyza Gürel, Nehir Balci, Mustafa Reha Okur   +2 more
wiley   +1 more source

Semiclassical strings in Sasaki-Einstein manifolds and long operators in N=1 gauge theories

, 2005
We study the AdS/CFT relation between an infinite class of 5-d Ypq Sasaki-Einstein metrics and the corresponding quiver theories. The long BPS operators of the field theories are matched to massless geodesics in the geometries, providing a test of AdS ...
A. Butti, A. Ceresole, A. Gorsky, A. Hanany, A. Hanany, A. Hanany, A. Hanany, A. Mikhailov, A. Mikhailov, A. Okounkov, A.A. Tseytlin, A.M. Polyakov, B. Feng, B. Feng, B. Kol, B.A. Burrington, C.P. Herzog, D. Berenstein, D. Berenstein, D. Kutasov, D. Martelli, D. Mateos, D. Mateos, E. Witten, G. Arutyunov, G. Arutyunov, H. Kihara, I.R. Klebanov, I.Y. Park, J. A. Minahan, J. Engquist, J. Stefanski, J.A. Minahan, J.M. Maldacena, J.P. Gauntlett, J.P. Gauntlett, J.P. Gauntlett, K. Peeters, L.A. Pando Zayas, M. Bertolini, M. Kruczenski, M. Kruczenski, Martin Kruczenski, N. Beisert, N. Beisert, N. Itzhaki, O. Aharony, O. Lunin, R. Hernandez, R. Hernandez, R. Hernandez, S. Benvenuti, S. Benvenuti, S. Benvenuti, S. Benvenuti, S. Franco, S. Franco, S. Frolov, S. Frolov, S.A. Frolov, Sergio Benvenuti, V.A. Kazakov   +61 more
core   +1 more source

Instantons on conical half-flat 6-manifolds [PDF]

, 2015
We present a general procedure to construct 6-dimensional manifolds with SU(3)-structure from SU(2)-structure 5-manifolds. We thereby obtain half-flat cylinders and sine-cones over 5-manifolds with Sasaki-Einstein SU(2)-structure.
Bunk, Severin, Lechtenfeld, Olaf, Popov, Alexander D., Sperling, Marcus   +3 more
core   +3 more sources

Microengineering the Liver: Strategies for Constructing Functional Liver‐on‐a‐Chip Devices

Exploration, EarlyView.
This review summarizes recent advances in liver‐on‐a‐chip (LOC) technologies, including fabrication strategies and functional integration approaches, and discusses their promising applications in drug screening and related biomedical fields. ABSTRACT Reliable in vitro liver models are indispensable for researching liver diseases and developing ...
Jie Wang, Ziwei Liang, Jiapu Wang, Zongyi Li, Shaojie Wang, Yan Wei, Xin Xie, Di Huang   +7 more
wiley   +1 more source

Foliations of Tangent Bundle in a Finsler Manifold [PDF]

, 2012
In this paper, a frame is introduced on tangent bundle of a Finsler manifold in a manner that it makes some simplicity to study the properties of the natural foliations in tangent bundle. Moreover, we show that the indicatrix bundle of a Finsler manifold
Attarchi, H., Rezaii, M. M.
core  

Calabi-Yau cones from contact reduction

, 2010
We consider a generalization of Einstein-Sasaki manifolds, which we characterize in terms both of spinors and differential forms, that in the real analytic case corresponds to contact manifolds whose symplectic cone is Calabi-Yau.
A. Fino, A. Tomassini, Anna Fino, C. Bär, C. Bär, C.P. Boyer, D. Conti, D. Conti, Diego Conti, E. Lerman, G. Grantcharov, H. Geiges, J.P. Gauntlett, L.C. Andres de, M. Cvetič, N.J. Hitchin, R.L. Bryant, S. Salamon, T. Friedrich, T. Friedrich, W.A. Graaf de   +20 more
core   +1 more source

Pair of Associated η-Ricci–Bourguignon Almost Solitons with Vertical Potential on Sasaki-like Almost Contact Complex Riemannian Manifolds

Mathematics
The manifolds studied are almost contact complex Riemannian manifolds, known also as almost contact B-metric manifolds. They are equipped with a pair of pseudo-Riemannian metrics that are mutually associated to each other using an almost contact ...
Mancho Manev
doaj   +1 more source

On Sasaki-Einstein manifolds in dimension five

, 2009
We prove the existence of Sasaki-Einstein metrics on certain simply connected 5-manifolds where until now existence was unknown. All of these manifolds have non-trivial torsion classes.
A. El Kacimi-Alaoui, A.G. Kouchnirenko, C.P. Boyer, C.P. Boyer, C.P. Boyer, C.P. Boyer, C.P. Boyer, C.P. Boyer, C.P. Boyer, C.P. Boyer, C.P. Boyer, C.P. Boyer, C.P. Boyer, Charles P. Boyer, D. Barden, J. Kollár, J. Kollár, J. Kollár, J.-P. Demailly, J.M. Johnson, J.P. Gauntlett, Michael Nakamaye, P. Orlik, P. Orlik, P. Orlik, S. Smale, S.S.-T. Yau   +26 more
core   +2 more sources