Results 61 to 70 of about 174,545 (215)

Three-dimensional Lorentzian $Ein(2)$ Lie groups

, 2020
In this paper, we completely classify three-dimensional Lorentzian $Ein(2)$ Lie groups.
openaire   +2 more sources

Beyond the Edge: Charge‐Transfer Excitons in Organic Donor‐Acceptor Cocrystals

Advanced Functional Materials, EarlyView.
Complex excitonic landscapes in acene–perfluoroacene cocrystals are unveiled by polarization‐resolved optical spectroscopy and many‐body theory. This systematic study of a prototypical model system for weakly interacting donor–acceptor compounds challenges common views of charge‐transfer excitons, providing a refined conceptual framework for ...
Sebastian Anhäuser, Ana M. Valencia, Sergei I. Ivlev, Marc Zeplichal, Andreas Terfort, Caterina Cocchi, Gregor Witte   +6 more
wiley   +1 more source

Cartan-Weyl 3-algebras and the BLG Theory I: Classification of Cartan-Weyl 3-algebras

, 2010
As Lie algebras of compact connected Lie groups, semisimple Lie algebras have wide applications in the description of continuous symmetries of physical systems.
A Basu, A Gustavsson, B Ezhuthachan, C-S Chu, C-S Chu, Chong-Sun Chu, D Berenstein, G Papadopoulos, H Nastase, IR Klebanov, IR Klebanov, J Bagger, J Bagger, J Bagger, J Gomis, J Gomis, JM Maldacena, JP Gauntlett, MA Bandres, MK Benna, N Akerblom, N Jacobson, N Lambert, N Lambert, NR Constable, O Aharony, P Medeiros de, P Medeiros de, P-M Ho, P-M Ho, S Benvenuti, S Kim, SM Kasymov, U Gran, V Filippov, Y Imamura, Y Imamura   +36 more
core   +1 more source

Microscopic Insights into Magnetic Warping and Time‐Reversal Symmetry Breaking in Topological Surface States of Rare‐Earth‐Doped Bi2Te3

Advanced Materials, EarlyView.
Magnetic doping of the topological insulator Bi2Te3 with erbium adatoms induces out‐of‐plane magnetism and breaks time‐reversal symmetry, opening a Dirac gap and driving a Fermi surface transition from hexagonal to star‐of‐David geometry. Microscopy, spectroscopy, and magnetic dichroism reveal atomically controlled magnetic interactions that tailor the
Beatriz Muñiz Cano, Fabián Calleja, Ji Dai, Massimo Tallarida, Vera Marinova, Alessandro Barla, Marc G. Cuxart, Pierluigi Gargiani, Gonzalo N. Molina, José Angel Silva‐Guillén, Adriana I. Figueroa, Kevin García‐Díez, Sergio O. Valenzuela, Aitor Mugarza, Amadeo L. Vázquez de Parga, Rodolfo Miranda, Francisco Guinea, Manuela Garnica, Miguel A. Valbuena   +18 more
wiley   +1 more source

Ricci-flat left-invariant Lorentzian metrics on 2-step nilpotent Lie groups [PDF]

Archivum Mathematicum, 2014
The author investigate Ricci-flatness of left-invariant Lorentzian metrics on 2-step nilpotent Lie groups. First they show that if \(\left \langle \, ,\right \rangle \) is a Ricci-flat left-invariant Lorentzian metric on a 2-step nilpotent Lie group \(N\), then the restriction of \(\left \langle \, ,\right \rangle \)\ to the center of the Lie algebra ...
Guediri, Mohammed, Bin-Asfour, Mona
openaire   +2 more sources

End‐to‐End Sensing Systems for Breast Cancer: From Wearables for Early Detection to Lab‐Based Diagnosis Chips

Advanced Materials Technologies, EarlyView.
This review explores advances in wearable and lab‐on‐chip technologies for breast cancer detection. Covering tactile, thermal, ultrasound, microwave, electrical impedance tomography, electrochemical, microelectromechanical, and optical systems, it highlights innovations in flexible electronics, nanomaterials, and machine learning.
Neshika Wijewardhane, Lyn I. Jones, Richard M. Martin, Helen Winter, Faezeh Arab Hassani   +4 more
wiley   +1 more source

Homogeneous Cotton solitons

, 2013
Left-invariant Cotton solitons on homogeneous manifolds are determined. Moreover, algebraic Cotton solitons are studied providing examples of non-invariant Cotton solitons, both in the Riemannian and Lorentzian homogeneous ...
Calviño-Louzao, E., Hervella, L. M., Seoane-Bascoy, J., Vázquez-Lorenzo, R.   +3 more
core   +1 more source

On the Existence of a Codimension 1 Completely Integrable Totally Geodesic Distribution on a Pseudo-Riemannian Heisenberg Group [PDF]

, 2010
In this note we prove that the Heisenberg group with a left-invariant pseudo-Riemannian metric admits a completely integrable totally geodesic distribution of codimension 1.
Batat, Wafaa, Rahmani, Salima
core   +4 more sources

Left-invariant Lorentzian flat metrics on Lie groups

, 2011
17 ...
Ben Haddou, Malika Ait, Boucetta, Mohamed, Lebzioui, Hicham   +2 more
openaire   +3 more sources

Universal Solvent Escape Strategies for Efficient Curing of Hydrogen‐Bond‐Rich 3D Printing Inks

Advanced Science, EarlyView.
This study developed a new 3D printing method for hydrogen‐bonded polymers by combining solvent replacement, nanoparticles, and optimized printing paths. This allows fast, precise scaffold fabrication. The scaffolds can be easily customized and release therapeutic agents slowly through protonation, enabling personalized bone, blood vessel, and nerve ...
Jie Chen, Qing Zhao, Wentao Fu, Weixian Chen, Xiaoqian Zhang, Gaiying Ye, Qinglei Meng, Liyuan Shao, Qian Ma, Lin Zhao, Ying Zhao, Weihua Guo   +11 more
wiley   +1 more source