4,241 research outputs found
ΠΠΈΡΡΠΎΠΏΠΎΠ»ΠΈΠΈ Π₯Π΅ΡΡΠΎΠ½Π°, Π‘ΡΠ³Π΄Π΅ΠΈ, ΠΠΎΡΠΈΠΈ ΠΈ ΠΠΈΡ ΠΈΠΈ ΠΏΠΎ Π΄Π°Π½Π½ΡΠΌ ΠΏΡΠΎΡΠΎΠΏΠΎΠ³ΡΠ°ΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ Π»Π΅ΠΊΡΠΈΠΊΠΎΠ½Π° Π²ΡΠ΅ΠΌΠ΅Π½ΠΈ ΠΠ°Π»Π΅ΠΎΠ»ΠΎΠ³ΠΎΠ²
ΠΠ±ΡΠ΅Π΅ ΠΈ ΡΠ°Π·Π½ΠΎΠ³Π»Π°ΡΠΈΡ ΠΌΠ΅ΠΆΠ΄Ρ ΡΡΠ΅Π½ΠΈΡΠΌΠΈ ΠΎ Π±ΠΎΠ³Π΅ ΠΡΠΈΠ³ΠΎΡΠΈΡ Π‘ΠΈΠ½Π°ΠΈΡΠ°, ΠΡΠΈΠ³ΠΎΡΠΈΡ ΠΠΊΠΈΠ½Π΄ΠΈΠ½Π° ΠΈ ΠΡΠΈΠ³ΠΎΡΠΈΡ ΠΠ°Π»Π°ΠΌΡ
ΠΡΠΎΡΠΈΠΌ ΠΏΡΠΎΡΠ΅Π½ΠΈΡ Π·Π° ΡΠΎ, ΡΡΠΎ ΠΌΡ Π½Π΅ Π½Π°ΠΏΠΈΡΠ°Π»ΠΈ ΡΡΠΎΡ Π΄ΠΎΠΊΠ»Π°Π΄ Π½Π° ΡΠΎΠ΄Π½ΠΎΠΌ ΡΠ·ΡΠΊΠ΅ ΡΠ±ΠΈΠ»ΡΡΡΠΈ ΠΠ°ΡΠ³Π°ΡΠΈΡΡ ΠΠ΄ΠΎΠ»ΡΡΠΎΠ²Π½Ρ ΠΠΎΠ»ΡΠΊΠΎΠ²ΡΠΊΠΎΠΉ, ΡΡΠΊΠΎΠ²ΠΎΠ΄ΠΈΡΠ΅Π»ΡΠ½ΠΈΡΡ ΠΊΠ°ΡΠ΅Π΄ΡΡ Π°Π½ΡΠΈΡΠ½ΠΎΠΉ Π΄ΡΠ΅Π²Π½ΠΎΡΡΠΈ ΠΈ ΡΡΠ΅Π΄Π½ΠΈΡ
Π²Π΅ΠΊΠΎΠ², ΠΏΡΠΈ ΠΊΠΎΡΠΎΡΠΎΠΉ ΠΎΠ½Π° ΠΏΡΠΈΠ½ΡΠ»Π° Π½Π°Ρ Ρ Π±ΠΎΠ»ΡΡΠΎΠΉ Π±Π»Π°Π³ΠΎΠΆΠ΅Π»Π°ΡΠ΅Π»ΡΠ½ΠΎΡΡΡΡ, ΠΏΠΎΡΠ»Π΅ ΡΠΎΠ³ΠΎ ΠΊΠ°ΠΊ ΠΌΡ ΠΏΠΎΠΏΠ°Π»ΠΈ Π² ΠΎΠΏΠ°Π»Ρ Π² ΠΠ΅Π½Π΅. ΠΠ° ΡΡΡΡΠΊΠΎΠΌ ΡΠ·ΡΠΊΠ΅ Π΄ΠΎΠΊΠ»Π°Π΄ Π±ΡΠ΄Π΅Ρ ΡΠΎΡΡΠ°Π²Π½ΠΎΠΉ ΡΠ°ΡΡΡΡ
ΠΊΠΎΠΌΠΌΠ΅Π½ΡΠ°ΡΠΈΡ ΠΊ Π½Π°ΡΠ΅ΠΌΡ ΠΏΠ΅ΡΠ΅ΠΈΠ·Π΄Π°Π½ΠΈΡ ΠΠΈΡΠΈΡ ΠΡΠΈΠ³ΠΎΡΠΈΡ Π‘ΠΈΠ½Π°ΠΈΡΠ° ΡΠΎΡΠΈΠ½ΡΠ½Π½ΠΎΠ³ΠΎ ΠΏΠ°ΡΡΠΈΠ°ΡΡ
ΠΎΠΌ ΠΠ°Π»Π»ΠΈΡΡΠΎΠΌ (ΡΠΌ. ΡΠ°ΠΌ 17, 1-26. ΠΠ°ΡΠΊ ΠΠΈΡΡΠΎΡ). ΠΡΠΎΠ³ Π½Π°ΡΡΠΎΡΡΠ΅Π³ΠΎ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ Π½Π° ΠΎΡΠ½ΠΎΠ²Π΅ Π΄ΠΎΠΊΡΠΎΠ³ΡΠ°ΡΠΈΠΉ, ΡΠΎΡΠΈΠ½ΡΠ½Π½ΡΡ
ΠΏΡΠΎΡΠΈΠ²Π½ΠΈΠΊΠ°ΠΌΠΈ ΠΠ°Π»Π°ΠΌΡ, ΡΠΎΡ, ΡΡΠΎ Π²ΠΈΠ·Π°Π½ΡΠΈΠΉΡΠΊΠΈΠΉ ΠΈΠ½ΡΠ΅Π»Π»Π΅ΠΊΡΡΠ°Π» ΠΡΠΈΠ³ΠΎΡΠΈΠΉ ΠΠΊΠΈΠ½Π΄ΠΈΠ½ Π±ΡΠ» ΡΠΎΠ³Π»Π°ΡΠ΅Π½ Ρ ΠΈΡΠΈΡ
Π°ΡΡΠΎΠΌ ΠΡΠΈΠ³ΠΎΡΠΈΠ΅ΠΌ Π‘ΠΈΠ½Π°ΠΈΡΠΎΠΌ Π²ΠΎ Π²ΡΠ΅Ρ
ΠΏΡΠ½ΠΊΡΠ°Ρ
, ΠΊΡΠΎΠΌΠ΅ ΠΎΠ΄Π½ΠΎΠ³ΠΎ, Π° ΠΈΠΌΠ΅Π½Π½ΠΎ ΡΡΠ²Π΅ΡΠΆΠ΄Π°Π΅ΠΌΠΎΠΉ ΠΈΠΌ ΠΏΠΎΠ»Π½ΠΎΠΉ Π½Π΅ΠΏΠΎΡΡΠΈΠΆΠΈΠΌΠΎΡΡΠΈ ΠΠΎΠ³Π°, Π² ΡΠΎ Π²ΡΠ΅ΠΌΡ ΠΊΠ°ΠΊ ΠΡΠΈΠ³ΠΎΡΠΈΠΉ ΠΠ°Π»Π°ΠΌΠ°, Π·Π°ΡΠΈΡΠ½ΠΈΠΊ ΠΈΡΠΈΡ
Π°ΡΡΠΎΠ², Π²ΠΎ Π²ΡΠ΅Ρ
ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½Π½ΡΡ
ΠΏΡΠ½ΠΊΡΠ°Ρ
ΠΎΡΠΊΠ»ΠΎΠ½ΡΠ»ΡΡ ΠΎΡ ΡΡΠ΅Π½ΠΈΡ Π‘ΠΈΠ½Π°ΠΈΡΠ° ΠΈ ΠΈΡΠΈΡ
Π°Π·ΠΌΠ° ΠΏΠΎ ΡΡΡΠΈ Π½Π΅ ΠΏΠΎΠ½ΠΈΠΌΠ°Π»
Erinnerungen und Gedanken zu den 13. Jekaterinburger Sjuzjumov-Lesungen im November 2010
Π Π½ΠΎΡΠ±ΡΠ΅ 2010 Π³. Π₯.-Π€. ΠΠ°ΠΉΠ΅Ρ ΠΏΡΠΈΠ½ΠΈΠΌΠ°Π» ΡΡΠ°ΡΡΠΈΠ΅ Π² ΡΠ°Π±ΠΎΡΠ΅ XIII ΠΠ΅ΠΆΠ΄ΡΠ½Π°ΡΠΎΠ΄Π½ΡΡ
Π‘ΡΠ·ΡΠΌΠΎΠ²ΡΠΊΠΈΡ
ΡΡΠ΅Π½ΠΈΠΉ Β«ΠΡΠΎΠ±Π»Π΅ΠΌΠ° ΠΊΠΎΠ½ΡΠΈΠ½ΡΠΈΡΠ΅ΡΠ° Π² Π²ΠΈΠ·Π°Π½ΡΠΈΠΉΡΠΊΠΎΠΉ ΠΈ ΠΏΠΎΡΡΠ²ΠΈΠ·Π°Π½ΡΠΈΠΉΡΠΊΠΎΠΉ ΠΈΡΡΠΎΡΠΈΠΈΒ». Π‘Π²ΠΎΠΈ Π²ΠΏΠ΅ΡΠ°ΡΠ»Π΅Π½ΠΈΡ ΠΎ ΠΊΠΎΠ½ΡΠ΅ΡΠ΅Π½ΡΠΈΠΈ, Π° ΡΠ°ΠΊΠΆΠ΅ Β«ΠΊΠΎΠΌΠΌΠ΅Π½ΡΠ°ΡΠΈΠΈ Π½Π΅ΠΊΠΎΡΠΎΡΡΡ
Π΄ΠΎΠΊΠ»Π°Π΄ΠΎΠ², Ρ ΠΊΠΎΡΠΎΡΡΠΌΠΈ ΠΏΠΎΠ·Π½Π°ΠΊΠΎΠΌΠΈΠ»ΡΡΒ», Π₯.-Π€. ΠΠ°ΠΉΠ΅Ρ ΠΈΠ·Π»ΠΎΠΆΠΈΠ» Π² ΠΏΠΈΡΡΠΌΠ΅ ΡΠ».-ΠΊΠΎΡΡ. Π ΠΠ, Π΄.ΠΈ.Π½. ΠΠ³ΠΎΡΡ ΠΠ°Π²Π»ΠΎΠ²ΠΈΡΡ ΠΠ΅Π΄Π²Π΅Π΄Π΅Π²Ρ ΠΎΡ 8 Π΄Π΅ΠΊΠ°Π±ΡΡ 2010 Π³
ΠΠ± ΠΎΡΠ΅Π½Ρ Π²Π΅ΡΠΎΡΡΠ½ΠΎΠΉ ΠΈΠ΄Π΅Π½ΡΠΈΡΠ½ΠΎΡΡΠΈ Π°Π²ΡΠΎΡΠ° βΠΡΠ°ΡΠΊΠΎΠΉ Π²Π΅ΡΡΠΈΠΈ ΠΈΡΡΠΎΡΠΈΡΠ΅ΡΠΊΠΈΡ ΡΠΎΠΎΠ±ΡΠ΅Π½ΠΈΠΉ ΠΠ΅ΠΎΡΠ³ΠΈΡ ΠΠ°Ρ ΠΈΠΌΠ΅ΡΠ°" Ρ ΠΠ°Π½ΡΠΈΠ»ΠΎΠΌ Π€ΠΈΠ»ΠΈΡΠΎΠΌ
Π€ΡΠ°Π½ΡΡΠ·ΡΠΊΠΈΠΉ ΠΈΠ·Π΄Π°ΡΠ΅Π»Ρ ΠΈ ΠΏΠ΅ΡΠ΅Π²ΠΎΠ΄ΡΠΈΠΊ ΠΡΡΠΎΡΠΈΠΈ ΠΠ°Ρ
ΠΈΠΌΠ΅ΡΠ° ΠΠ»ΡΠ±ΡΡ Π€Π°ΠΉΠ΅ ΠΏΠΎΡΠ²ΡΡΠΈΠ» Π°Π½ΠΎΠ½ΠΈΠΌΠ½ΠΎΠΉ βΠΡΠ°ΡΠΊΠΎΠΉ Π²Π΅ΡΡΠΈΠΈ" ΡΡΠΎΠ³ΠΎ ΠΏΡΠΎΠΈΠ·Π²Π΅Π΄Π΅Π½ΠΈΡ, Π½Π΅ΡΠΌΠΎΡΡΡ Π½Π° Π΅Ρ Π½Π΅ΠΏΠΎΠ»Π½ΠΎΡΠ΅Π½Π½ΠΎΡΡΡ, ΡΡΠΈ ΡΠΎΠΌΠ°, ΠΈΠ·Π΄Π°Π²Π°Ρ ΠΈ ΠΊΠΎΠΌΠΌΠ΅Π½ΡΠΈΡΡΡ Π΅Ρ Π² ΠΏΠ΅ΡΠ²ΡΡ
Π΄Π²ΡΡ
ΠΈ ΡΠΎΠΎΠ±ΡΠ°Ρ ΡΠ΅Π·ΡΠ»ΡΡΠ°Ρ ΡΠ²ΠΎΠ΅Π³ΠΎ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ ΡΡΠΈΠ»Ρ ΠΈ Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠ° ΠΊΠΎΠΌΠΏΠΈΠ»ΡΡΠΎΡΠ° Π² ΡΡΠ΅ΡΡΠ΅ΠΌ, ΠΏΡΠΈ ΡΡΠΎΠΌ ΡΠ½Π°Π±ΠΆΠ°Ρ Π΅Ρ Π΄Π²ΡΠΌΡ ΡΠ·ΡΠΊΠΎΠ²Π΅Π΄ΡΠ΅ΡΠΊΠΈΠΌΠΈ
ΠΈΠ½Π΄Π΅ΠΊΡΠ°ΠΌΠΈ. Π‘ΠΎΠ³Π»Π°ΡΠ½ΠΎ Π²ΡΠ²ΠΎΠ΄Π°ΠΌ Π€Π°ΠΉΠ΅, Π°Π²ΡΠΎΡ βΠΡΠ°ΡΠΊΠΎΠΉ Π²Π΅ΡΡΠΈΠΈ" βΠ²Π²ΠΎΠ΄ΠΈΡ ΠΌΠ΅Π½Π΅Π΅ ΡΠ»ΠΎΠΆΠ½ΡΠ΅ Π²ΠΎΠΊΠ°Π±ΡΠ»ΡΡΠΈΠΉ ΠΈ ΡΠΈΠ½ΡΠ°ΠΊΡΠΈΡ, Π½Π΅ ΡΠΏΠΎΡΡΠ΅Π±Π»ΡΡ, ΠΎΠ΄Π½Π°ΠΊΠΎ, Π½Π°ΡΠΎΠ΄Π½ΠΎΠ³ΠΎ ΡΠ·ΡΠΊΠ°". ΠΡΠ»ΡΠ³Π°ΡΠ½ΡΠ΅ ΡΠ»ΠΎΠ²Π°, ΡΠ°ΠΊΠΈΠ΅ ΠΊΠ°ΠΊ ΟΞλλ, Οοῦδα ΠΈ ΟΞΏΟβλα ΠΌΠΎΠΆΠ½ΠΎ ΡΡΠΈΡΠ°ΡΡ ΠΈΡΠΊΠ»ΡΡΠ΅Π½ΠΈΡΠΌΠΈ, ΠΌΠΎΡΡΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈΠ΅ Π²ΡΠ»ΡΠ³Π°ΡΠΈΠ·ΠΌΡ ΡΠ°ΠΊΠΆΠ΅ ΡΠ΅Π΄ΠΊΠΈ.
Π Π΅Π΄ΠΊΠΈΠΌΠΈ ΡΠ²Π»ΡΡΡΡΡ ΠΈ ΡΠΈΡΡΠ΅ΠΌΠ°ΡΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΠΌΠΎΠ΄Π΅ΡΠ½ΠΈΠ·Π°ΡΠΈΠΈ ΡΠ»ΠΎΠΆΠ½ΠΎΠ³ΠΎ, ΠΏΠΎΠ΄ΡΠ°ΠΆΠ°ΡΡΠ΅Π³ΠΎ Π°Π½ΡΠΈΡΠ½ΠΎΠΌΡ ΡΠ·ΡΠΊΡ ΠΎΡΠΈΠ³ΠΈΠ½Π°Π»Π°, ΠΊΠ°ΠΊ Π·Π°ΠΌΠ΅Π½Π° ΠΏΡΠ΅Π΄Π»ΠΎΠ³Π° ΟΟΟΟ Ρ ΡΠΎΠ΄ΠΈΡΠ΅Π»ΡΠ½ΡΠΌ ΠΏΠ°Π΄Π΅ΠΆΠΎΠΌ ΡΠ΅ΡΠ΅Π· ΟΞ±ΟΞ¬ ΠΈ ΟΞ±ΟΞ¬ Ρ Π²ΠΈΠ½ΠΈΡΠ΅Π»ΡΠ½ΡΠΌ ΡΠ΅ΡΠ΅Π· ΟΟΟΟ.
Π’ΡΠ°ΠΊΡΠΎΠ²ΠΊΠ° ΡΠ΅ΠΊΡΡΠ° Ρ ΡΠ΅Π»ΡΡ ΡΠΏΡΠΎΡΠ΅Π½ΠΈΡ, ΡΠΎΠ³Π»Π°ΡΠ½ΠΎ ΠΈΠ·Π΄Π°ΡΠ΅Π»Ρ, ΡΠΊΠΎΡΠ΅Π΅ ΠΈΠΌΠΏΡΠΎΠ²ΠΈΠ·ΠΈΡΠΎΠ²Π°Π½Π° ΠΈ Π½Π΅Π»ΠΎΠ²ΠΊΠ°..
Photoinduced melting of superconductivity in the high-Tc superconductor La2-xSrxCuO4 probed by time-resolved optical and THz techniques
Dynamics of depletion and recovery of superconducting state in La2-xSrxCuO_4
thin films is investigated utilizing optical pump-probe and optical pump - THz
probe techniques as a function of temperature and excitation fluence. The
absorbed energy density required to suppress superconductivity is found to be
about 8 times higher than the thermodynamically determined condensation energy
density and nearly temperature independent between 4 and 25 K. These findings
indicate that during the time when superconducting state suppression takes
place (~0.7 ps), a large part (nearly 90%) of the energy is transferred to the
phonons with energy lower than twice the maximum value of of the SC gap and
only 10% is spent on Cooper pair breaking.Comment: 8 pages, 5 figure
Noisy Optimization: Convergence with a Fixed Number of Resamplings
It is known that evolution strategies in continuous domains might not
converge in the presence of noise. It is also known that, under mild
assumptions, and using an increasing number of resamplings, one can mitigate
the effect of additive noise and recover convergence. We show new sufficient
conditions for the convergence of an evolutionary algorithm with constant
number of resamplings; in particular, we get fast rates (log-linear
convergence) provided that the variance decreases around the optimum slightly
faster than in the so-called multiplicative noise model. Keywords: Noisy
optimization, evolutionary algorithm, theory.Comment: EvoStar (2014
Disentanglement of the electronic and lattice parts of the order parameter in a 1D Charge Density Wave system probed by femtosecond spectroscopy
We report on the high resolution studies of the temperature (T) dependence of
the q=0 phonon spectrum in the quasi one-dimensional charge density wave (CDW)
compound K0.3MoO3 utilizing time-resolved optical spectroscopy. Numerous modes
that appear below Tc show pronounced T-dependences of their amplitudes,
frequencies and dampings. Utilizing the time-dependent Ginzburg-Landau theory
we show that these modes result from linear coupling of the electronic part of
the order parameter to the 2kF phonons, while the (electronic) CDW amplitude
mode is overdamped.Comment: 4 pages, 3 figures + supplementary material, accepted for publication
in Phys. Rev. Let
Erinnerungen und Gedanken zu den 13. Jekaterinburger Sjuzjumov-Lesungen im November 2010
Erinnerungen und Gedanken zu den 13. Jekaterinburger Sjuzjumov-Lesungen im November 2010Erinnerungen und Gedanken zu den 13. Jekaterinburger Sjuzjumov-Lesungen im November 201
Macroscopic evidence for quantum criticality and field-induced quantum fluctuations in cuprate superconductors
We present macroscopic experimental evidence for field-induced microscopic
quantum fluctuations in different hole- and electron-type cuprate
superconductors with varying doping levels and numbers of CuO layers per
unit cell. The significant suppression of the zero-temperature in-plane
magnetic irreversibility field relative to the paramagnetic field in all
cuprate superconductors suggests strong quantum fluctuations due to the
proximity of the cuprates to quantum criticality.Comment: 3 figures. To appear in Phys. Rev. B, Rapid Communications (2007).
For correspondence, contact: Nai-Chang Yeh (e-mail: [email protected]
Medium corrections in the formation of light charged particles in heavy ion reactions
Within a microscopic statistical description of heavy ion collisions, we
investigate the effect of the medium on the formation of light clusters. The
dominant medium effects are self-energy corrections and Pauli blocking that
produce the Mott effect for composite particles and enhanced reaction rates in
the collision integrals. Microscopic description of composites in the medium
follows the Dyson equation approach combined with the cluster mean-field
expansion. The resulting effective few-body problem is solved within a properly
modified Alt-Grassberger-Sandhas formalism. The results are incorporated in a
Boltzmann-Uehling-Uhlenbeck simulation for heavy ion collisions. The number and
spectra of light charged particles emerging from a heavy ion collision changes
in a significant manner in effect of the medium modification of production and
absorption processes.Comment: 16 pages, 6 figure
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