An adaptive algorithm for n-body field expansions
Weinberg, Martin D.
1998-05-28
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46 records were found.
Comment: 7 pages, 7 figures; ref.correction
Comment: 6 pages, 5 figures
Comment: 5 pages, 4 figures, RevTeX. Accepted for publication in Phys. Rev. B
(Rapid. Comm.)
Comment: 7 pages, including 4 figures Changes made to introduction Added
figure Submitted to SSC
Comment: 4 pages, 2 figures
Spatial distribution and dynamics of plasma-membrane proteins are thought to be modulated by lipid composition and by the underlying cytoskeleton, which forms transient barriers to diffusion. So far this idea was probed by single-particle tracking of membrane components in which gold particles or antibodies were used to individually monitor the molecules of interest. Unfortunately, the relatively large particles needed for single-particle tracking can in principle alter the very dynamics under study. Here, we use a method that makes it possible to investigate plasma-membrane proteins by means of small molecular labels, specifically single GFP constructs. First, fast imaging of the region of interest on the membrane is performed. For each time delay in the resulting stack of images the average spatial correlation function is calculated....
Comment: Accepted for publication on Physical Review B Rapid Communications
In a microcavity, light-matter coupling is quantified by the vacuum Rabi
frequency $\Omega_R$. When $\Omega_R$ is larger than radiative and
non-radiative loss rates, the system eigenstates (polaritons) are linear
superposition of photonic and electronic excitations, a condition actively
investigated in diverse physical implementations. Recently, a quantum
electrodynamic regime (ultra-strong coupling) was predicted when $\Omega_R$
becomes comparable to the transition frequency. Here we report unambiguous
signatures of this regime in a quantum-well intersubband microcavity. Measuring
the cavity-polariton dispersion in a room-temperature linear optical
experiment, we directly observe the anti-resonant light-matter coupling and the
photon-energy renormalization of the vacuum field.
Comment: 11 pages, 3 figures
