Results 51 to 60 of about 654,704 (296)

TIME AS A QUANTUM OBSERVABLE [PDF]

International Journal of Modern Physics A, 2007
Some new results are presented and recent developments are reviewed on the study of Time in quantum physics as an observable, canonically conjugate to energy. Operators for the observable Time are investigated in particle and photon quantum theory.
RECAMI, Erasmo, OLKHOVSKY, VLADISLAV S.
openaire   +4 more sources

Organizing the interface—Plasma membrane architecture and receptor dynamics in virus‐cell interactions

FEBS Letters, EarlyView.
Plasma membranes contain dynamic nanoscale domains that organize lipids and receptors. Because viruses operate at similar scales, this architecture shapes early infection steps, including attachment, receptor engagement, and entry. Using influenza A virus and HIV‐1 as examples, we highlight how receptor nanoclusters, multivalent glycan interactions ...
Jan Schlegel, Christian Sieben
wiley   +1 more source

Non-linear optomechanical measurement of mechanical motion [PDF]

, 2016
Precision measurement of non-linear observables is an important goal in all facets of quantum optics. This allows measurement-based non-classical state preparation, which has been applied to great success in various physical systems, and provides a route
Boisen, A., Bowen, W. P., Brawley, G. A., Larsen, P. E., Schmid, S., Vanner, M. R.   +5 more
core   +3 more sources

Colorectal cancer‐derived FGF19 is a metabolically active serum biomarker that exerts enteroendocrine effects on mouse liver

Molecular Oncology, EarlyView.
Meta‐transcriptome analysis identified FGF19 as a peptide enteroendocrine hormone associated with colorectal cancer prognosis. In vivo xenograft models showed release of FGF19 into the blood at levels that correlated with tumor volumes. Tumoral‐FGF19 altered murine liver metabolism through FGFR4, thereby reducing bile acid synthesis and increasing ...
Jordan M. Beardsley, Michael W. Rohr, Joseph A. Goode, Sai Preethi Nakkina, Jignesh G. Parikh, Deborah A. Altomare   +5 more
wiley   +1 more source

Observation of inter-Landau-level quantum coherence in semiconductor quantum wells

, 2008
Using three-pulse four-wave-mixing femtosecond spectroscopy, we excite a non-radiative coherence between the discrete Landau levels of an undoped quantum well and study its dynamics.
D. S. Chemla, E. G. Kavousanaki, I. A. Cotoros, I. E. Perakis, J. Tignon, J. Wang, K. M. Dani, W. Schäfer   +7 more
core   +1 more source

Phase space caustics in multi-component systems [PDF]

, 1998
As examples of quantum-"classical" coupling systems, multi-component systems are studied by semiclassical evaluations of the Feynman kernels in the coherent-state representation. From the observation of the phase space caustics due to the presence of the
A. Rubin, A. Tanaka, Atushi Tanaka, B. d'Espagnat, B. V. Chirikov, E. Schrödinger, G. Casati, G. G. Stokes, G. Stock, I. Daubechies, J. C. Tully, J. Cao, J. R. Glauber, J. R. Klauder, J. R. Klauder, K. Hushimi, K. Takahashi, M. C. Gutzwiller, P. Kramer, P. Pechukas, R. P. Feynman, R. Scharf, S. Adachi, W. H. Miller   +23 more
core   +2 more sources

Observational consequences of quantum cosmology [PDF]

Nuclear Physics B, 2007
12 pages, harvmac; refs.
openaire   +2 more sources

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

FEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

Observation of quantum strong Mpemba effect

Nature Communications
An ancient and counterintuitive phenomenon known as the Mpemba effect (water can cool faster when initially heated up) showcases the critical role of initial conditions in relaxation processes.
Jie Zhang, Gang Xia, Chun-Wang Wu, Ting Chen, Qian Zhang, Yi Xie, Wen-Bo Su, Wei Wu, Cheng-Wei Qiu, Ping-Xing Chen, Weibin Li, Hui Jing, Yan-Li Zhou   +12 more
doaj   +1 more source

Quantized surface transport in topological Dirac semimetal films

Nature Communications, 2019
The recent observation of quantum Hall states in bulk Dirac semimetal Cd3As2 is possibly evolved from topological states. Here, Nishihaya et al. report surface quantum oscillation and its evolution into quantum Hall states in Cd3As2 thin films, where ...
Shinichi Nishihaya, Masaki Uchida, Yusuke Nakazawa, Ryosuke Kurihara, Kazuto Akiba, Markus Kriener, Atsushi Miyake, Yasujiro Taguchi, Masashi Tokunaga, Masashi Kawasaki   +9 more
doaj   +1 more source