Results 111 to 120 of about 63,762 (335)

ON GRAVITATIONAL DRESSING OF 2D FIELD THEORIES IN CHIRAL GAUGE

, 1995
After giving a pedagogical review of the chiral gauge approach to 2D gravity, with particular emphasis on the derivation of the gravitational Ward identities, we discuss in some detail the interpretation of matter correlation functions coupled to gravity
Adel Bilala, Andrei, Chamseddine, David, Distler, Friedan, Gradshteyn, Gross, Gurarie, Ian I. Kogan, Klebanov, Knizhnik, Polyakov, Polyakov, Rozansky   +14 more
core   +1 more source

Singularities of plane gravitational waves in Einstein’s general relativity [PDF]

, 2020
Tongzheng Wang, Jared Fier, Bowen Li, Guoliang Lü, Zhaojun Wang, Yumei Wu, Anzhong Wang   +6 more
openalex   +1 more source

CD28‐Targeted Enzyme‐Responsive Conformation‐Switching Peptide Self‐Assembly for Selective T‐Cell Acute Lymphoblastic Leukemia (T‐ALL) Therapy

Advanced Science, EarlyView.
We developed the enzyme‐responsive peptide SAp‐CD28 to selectively target CD28‐overexpressing T‐ALL cells. Following phosphatase‐mediated activation, SAp‐CD28 undergoes conformational switching and nanooligomerization, resulting in the disruption of CD28 downstream signaling.
Jun Li, Ziyu Jia, Dekun Li, Zhi‐Wen Hu, Yinghao Ding, Shengyi Zhang, Shengkun Tuo, Zhimou Yang, Huisheng Fu, Ling Wang, Man‐Di Wang   +10 more
wiley   +1 more source

Black Hole Bounces on the Road to Quantum Gravity

Universe, 2018
Quantum resolutions of the space-time singularity at the end of gravitational collapse may provide hints towards the properties of a final theory of Quantum-Gravity.
Daniele Malafarina
doaj   +1 more source

Study of Free‐Space Optical Quantum Network: Review and Prospectives

Advanced Science, EarlyView.
Free from the constraints of fiber connections, free‐space quantum network enables longer and more flexible quantum network connections. This review summarizes and comparatively analyzes free‐space quantum network experiments based on ground stations, satellites, and mobile platforms.
Hua‐Ying Liu, Zhenda Xie, Shining Zhu
wiley   +1 more source

On the polynomial degeneracy of Ricci invariants and spacetime singularity

Physics Letters B
We explore the connection of a general relativistic matter-energy momentum tensor with the polynomial degeneracies of curvature invariants defined in Riemannian geometry.
Soumya Chakrabarti
doaj   +1 more source

Integrability of the Einstein-nonlinear SU(2) $$\sigma $$ σ -model in a nontrivial topological sector

European Physical Journal C: Particles and Fields, 2017
The integrability of the $$\Lambda $$ Λ -Einstein-nonlinear $$SU(2)\,\sigma $$ S U ( 2 ) σ -model with nonvanishing cosmological charge is studied. We apply the method of singularity analysis of differential equations and we show that the equations for ...
Andronikos Paliathanasis, Tim Taves, P. G. L. Leach   +2 more
doaj   +1 more source

Light‑Driven Propulsion of Graphene Aerogels in Microgravity

Advanced Science, EarlyView.
Ultralight graphene aerogels convert laser light into thrust. Parabolic‐flight experiments directly compare their motion in microgravity and at 1 g, revealing order‐of‐magnitude enhancements in distance, velocity, and transient thrust when weight and friction are removed (∼50 times enhancement).
Omnia Khattab, Rami Elkaffas, Basel Altawil, Omar Alsuwaidi, Afnan Almubashir, Claire Perfetti, Shanavas Shajahan, Marco Braibanti, Sean Swei, Carlo Saverio Iorio, Yarjan Abdul Samad   +10 more
wiley   +1 more source

Bioinspired Morphology‐Decoupled Soft Gripper with Enhanced Bidirectional Grasping Capability

Advanced Science, EarlyView.
Inspired by biological predation, a novel gripper decouples cross‐modal grasping via dual morphological configurations. Synergistically integrating hybrid rigid and soft coupled fingers with a metamaterial palm, the system performs active compliant grasping for static objects and passive cage capture for dynamic targets.
Yedong Huang, Dazhong Yu, Baijin Mao, Fangming Li, Juntian Qu   +4 more
wiley   +1 more source

Caustics type of gravitational singularities

4 pages.
Sardanashvily, G. A., Timoshenko, E. G.
openaire   +3 more sources