Results 181 to 190 of about 34,461,409 (228)

The MAPSTROKE analysis of the access to stroke reperfusion treatment and stroke units in Italy. [PDF]

open access: yesEur Stroke J
Nicolini E   +10 more
europepmc   +1 more source

Heterochromatin-based silencing of a foreign tandem repeat in Drosophila melanogaster shows unusual biochemistry and temperature sensitivity. [PDF]

open access: yesGenetics
Gu T   +11 more
europepmc   +1 more source

Polycomb repression works without Siesta, the <i>Drosophila</i> ortholog of mammalian PCGF3. [PDF]

open access: yesSci Adv
Kahn TG   +7 more
europepmc   +1 more source

SU(2) and SU(1,1) interferometers.

Physical Review A, 1986
A Lie-group-theoretical approach to the analysis of interferometers is presented. Conventional interferometers such as the Mach-Zehnder and Fabry-Perot can be characterized by SU(2). We introduce a class of interferometers characterized by SU(1,1). These interferometers employ active elements such as four-wave mixers or degenerate-parametric amplifiers
B. Yurke, S. L. McCall, J. Klauder
semanticscholar   +3 more sources

The SU(4) ⊃ SU(2) ⊗ SU(2) chain

Journal of Mathematical Physics, 1978
We consider the physical SU(4) ⊃ SU(2) ⊗ SU(2) chain. With the help of the three vectors (Sα, Ti, Qαi), (VαS, VtT, VαiQ), (WSα, WiT, WαiQ) we can easily write the three fundamental invariants I2, I3, I4; the two operators Ω and Φ (eigenvalues ω and φ) of Moshinsky and Nagel [Phys. Lett.
A. Partensky, C. Maguin
openaire   +1 more source

SU(2) and SU(1,1) phase states

Physical Review A, 1990
Phase operators and phase states are introduced in the Hilbert space ${H}_{2j+1}$ associated with the SU(2) group. The phase operators obey the SU(2) algebra and play a dual role to the standard angular-momentum operators. A finite Weyl group plays a fundamental role in those ideas.
openaire   +2 more sources

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