391 research outputs found
Dipole lasing phase transitions in media with singularities in polarizabilities
We show that a divergence in the optical polarizability of a heterogeneous medium with nonlinear amplification and a strong dipole-dipole interaction between particles can lead to a phase transition, for which the dipole momentum of the particles or the dipole radiation rate can be taken as order parameters. The "dipole laser" (Phys. Rev. A 71, 063812 (2005)) can be used both as a simple example of such a second-order phase transition and to provide a recipe for its analysis. We show that similar phase transitions may be possible for a nanoparticle on the surface of an optically active medium and at the "Clausius-Mossotti" catastrophe in a bulk heterogeneous medium
ΠΡΠΎΠ±Π΅Π½Π½ΠΎΡΡΠΈ Π»Π΅ΠΊΡΠΈΠΊΠΎ-ΡΠ΅ΠΌΠ°Π½ΡΠΈΡΠ΅ΡΠΊΠΎΠΉ Π³ΡΡΠΏΠΏΡ Β«ΡΠ΅Π±Π΅Π½ΠΎΠΊΒ» Π² ΠΈΡΠΏΠ°Π½ΡΠΊΠΎΠΌ ΠΈ ΡΠΊΡΠ°ΠΈΠ½ΡΠΊΠΎΠΌ ΡΠ·ΡΠΊΠ°Ρ
In the article structure of lexical-semantic group βchildβ in the Spanish and Ukrainian languages in theΒ comparative aspect is analyzed. Notions of dominant, local and general peripheries, similarities and differencesΒ in the analyzed languages are defined. Process of nominative, qualificative, nominative-qualificative semeΒ actualization is shown by examples. That leads to appearance of different connotations while nomination ofΒ child in the Spanish and Ukrainian languages.Π ΡΡΠ°ΡΡΠ΅ Π°Π½Π°Π»ΠΈΠ·ΠΈΡΡΠ΅ΡΡΡ ΡΡΡΡΠΊΡΡΡΠ° Π»Π΅ΠΊΡΠΈΠΊΠΎ-ΡΠ΅ΠΌΠ°Π½ΡΠΈΡΠ΅ΡΠΊΠΎΠΉ Π³ΡΡΠΏΠΏΡ Β«ΡΠ΅Π±Π΅Π½ΠΎΠΊΒ» Π² ΠΈΡΠΏΠ°Π½ΡΠΊΠΎΠΌ ΠΈΒ ΡΠΊΡΠ°ΠΈΠ½ΡΠΊΠΎΠΌ ΡΠ·ΡΠΊΠ°Ρ
Π² ΠΊΠΎΠΌΠΏΠ°ΡΠ°ΡΠΈΠ²Π½ΠΎΠΌ Π°ΡΠΏΠ΅ΠΊΡΠ΅. ΠΠΏΡΠ΅Π΄Π΅Π»ΡΠ΅ΡΡΡ ΠΏΠΎΠ½ΡΡΠΈΠ΅ Π΄ΠΎΠΌΠΈΠ½Π°ΡΡ, Π»ΠΎΠΊΠ°Π»ΡΠ½ΠΎΠΉ ΠΈ ΠΎΠ±ΡΠ΅ΠΉΒ ΠΏΠ΅ΡΠΈΡΠ΅ΡΠΈΠΈ, ΠΈΡ
ΠΎΠ±ΡΠΈΠ΅ ΡΠ΅ΡΡΡ ΠΈ ΡΠ°Π·Π»ΠΈΡΠΈΡ Π² ΠΈΡΡΠ»Π΅Π΄ΡΠ΅ΠΌΡΡ
ΡΠ·ΡΠΊΠ°Ρ
. ΠΠ° ΠΏΡΠΈΠΌΠ΅ΡΠ°Ρ
ΠΏΠΎΠΊΠ°Π·Π°Π½ ΠΏΡΠΎΡΠ΅ΡΡ Π°ΠΊΡΡΠ°Π»ΠΈΠ·Π°ΡΠΈΠΈΒ Π½ΠΎΠΌΠΈΠ½Π°ΡΠΈΠ²Π½ΡΡ
, ΠΊΠ²Π°Π»ΠΈΡΠΈΠΊΠ°ΡΠΈΠ²Π½ΡΡ
, Π½ΠΎΠΌΠΈΠ½Π°ΡΠΈΠ²Π½ΠΎ-ΠΊΠ²Π°Π»ΠΈΡΠΈΠΊΠ°ΡΠΈΠ²Π½ΡΡ
ΡΠ΅ΠΌ, ΡΡΠΎ ΠΏΡΠΈΠ²ΠΎΠ΄ΠΈΡ ΠΊ ΠΏΠΎΡΠ²Π»Π΅Π½ΠΈΡΒ ΡΠ°Π·Π»ΠΈΡΠ½ΠΎΠ³ΠΎ ΡΠΎΠ΄Π° ΠΊΠΎΠ½Π½ΠΎΡΠ°ΡΠΈΠΉ ΠΏΡΠΈ Π½ΠΎΠΌΠΈΠ½Π°ΡΠΈΠΈ ΡΠ΅Π±Π΅Π½ΠΊΠ° Π² ΠΈΡΠΏΠ°Π½ΡΠΊΠΎΠΌ ΠΈ ΡΠΊΡΠ°ΠΈΠ½ΡΠΊΠΎΠΌ ΡΠ·ΡΠΊΠ°Ρ
Exchange of Experience of Cancer Patients in Social Networks
Oncological disease acts as a barrier in communication in real life, not only with relatives and healthy people, but even with those who have encountered it themselves. Communication becomes relevant in social networks, as there is no personal contact, anonymity is inherent and less time is spent on conversation. The purpose of our study was to analyze the role of social networks as communication between cancer patients using Instagram as an example. This network was chosen because it is visited by 42 million people a month and every year it is gaining even more popularity. We studied 15 profiles in our chosen social network. More than 42.4 thousand publications are devoted to the topic β#critical oncology.β We found that communicating on Instagram helps this category of people to facilitate the process of treatment or remission, having received support, attention and understanding among the βsubscribersβ.ΠΠ½ΠΊΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΎΠ΅ Π·Π°Π±ΠΎΠ»Π΅Π²Π°Π½ΠΈΠ΅ Π²ΡΡΡΡΠΏΠ°Π΅Ρ Π±Π°ΡΡΠ΅ΡΠΎΠΌ Π² ΠΎΠ±ΡΠ΅Π½ΠΈΠΈ Π² ΡΠ΅Π°Π»ΡΠ½ΠΎΠΉ ΠΆΠΈΠ·Π½ΠΈ Π½Π΅ ΡΠΎΠ»ΡΠΊΠΎ Ρ ΡΠΎΠ΄ΡΡΠ²Π΅Π½Π½ΠΈΠΊΠ°ΠΌΠΈ ΠΈ Π·Π΄ΠΎΡΠΎΠ²ΡΠΌΠΈ Π»ΡΠ΄ΡΠΌΠΈ, Π½ΠΎ Π΄Π°ΠΆΠ΅ Ρ ΡΠ΅ΠΌΠΈ, ΠΊΡΠΎ ΡΡΠΎΠ»ΠΊΠ½ΡΠ»ΡΡ Ρ ΡΡΠΈΠΌ ΡΠ°ΠΌ. ΠΠΊΡΡΠ°Π»ΡΠ½ΡΠΌ ΡΡΠ°Π½ΠΎΠ²ΠΈΡΡΡ ΠΊΠΎΠΌΠΌΡΠ½ΠΈΠΊΠ°ΡΠΈΡ Π² ΡΠΎΡΠΈΠ°Π»ΡΠ½ΡΡ
ΡΠ΅ΡΡΡ
, Π³Π΄Π΅ ΠΎΡΡΡΡΡΡΠ²ΡΠ΅Ρ Π»ΠΈΡΠ½ΡΠΉ ΠΊΠΎΠ½ΡΠ°ΠΊΡ, ΠΏΡΠΈΡΡΡΠ΅ Π°Π½ΠΎΠ½ΠΈΠΌΠ½ΠΎΡΡΡ ΠΈ Π²ΡΠ΅ ΠΌΠ΅Π½ΡΡΠ΅ Π·Π°ΡΡΠ°ΡΠΈΠ²Π°Π΅ΡΡΡ Π²ΡΠ΅ΠΌΠ΅Π½ΠΈ Π½Π° ΡΠ°Π·Π³ΠΎΠ²ΠΎΡ. Π¦Π΅Π»ΡΡ Π½Π°ΡΠ΅Π³ΠΎ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ Π±ΡΠ» Π°Π½Π°Π»ΠΈΠ· ΡΠΎΠ»ΠΈ ΡΠΎΡΠΈΠ°Π»ΡΠ½ΡΡ
ΡΠ΅ΡΠ΅ΠΉ ΠΊΠ°ΠΊ ΠΊΠΎΠΌΠΌΡΠ½ΠΈΠΊΠ°ΡΠΈΠΈ ΠΌΠ΅ΠΆΠ΄Ρ ΠΎΠ½ΠΊΠΎΠ±ΠΎΠ»ΡΠ½ΡΠΌΠΈ Π½Π° ΠΏΡΠΈΠΌΠ΅ΡΠ΅ Instagram. ΠΠ°Π½Π½Π°Ρ ΡΠ΅ΡΡ Π±ΡΠ»Π° Π²ΡΠ±ΡΠ°Π½Π°, ΠΏΠΎΡΠΎΠΌΡ ΡΡΠΎ Π΅Π΅ ΠΏΠΎΡΠ΅ΡΠ°ΡΡ 42 ΠΌΠ»Π½ ΡΠ΅Π»ΠΎΠ²Π΅ΠΊ Π² ΠΌΠ΅ΡΡΡ, ΠΈ Ρ ΠΊΠ°ΠΆΠ΄ΡΠΌ Π³ΠΎΠ΄ΠΎΠΌ ΠΎΠ½Π° Π½Π°Π±ΠΈΡΠ°Π΅Ρ Π΅ΡΠ΅ Π±ΠΎΠ»ΡΡΡΡ ΠΏΠΎΠΏΡΠ»ΡΡΠ½ΠΎΡΡΡ. ΠΡ ΠΈΠ·ΡΡΠΈΠ»ΠΈ 15 ΠΏΡΠΎΡΠΈΠ»Π΅ΠΉ Π² Π²ΡΠ±ΡΠ°Π½Π½ΠΎΠΉ Π½Π°ΠΌΠΈ ΡΠΎΡΠΈΠ°Π»ΡΠ½ΠΎΠΉ ΡΠ΅ΡΠΈ. ΠΠΎΠ»Π΅Π΅ 42,4 ΡΡΡ. ΠΏΡΠ±Π»ΠΈΠΊΠ°ΡΠΈΠΉ ΠΏΠΎ ΡΠ΅ΠΌΠ΅ Β«#ΠΎΠ½ΠΊΠΎΠ»ΠΎΠ³ΠΈΡΠ½Π΅ΠΏΡΠΈΠ³ΠΎΠ²ΠΎΡΒ». ΠΠ°ΠΌΠΈ Π±ΡΠ»ΠΎ Π²ΡΡΠ²Π»Π΅Π½ΠΎ, ΡΡΠΎ ΠΎΠ±ΡΠ΅Π½ΠΈΠ΅ Π² Instagram ΠΏΠΎΠΌΠΎΠ³Π°Π΅Ρ ΡΡΠΎΠΉ ΠΊΠ°ΡΠ΅Π³ΠΎΡΠΈΠΈ Π»ΡΠ΄Π΅ΠΉ ΠΎΠ±Π»Π΅Π³ΡΠΈΡΡ ΠΏΡΠΎΡΠ΅ΡΡ Π»Π΅ΡΠ΅Π½ΠΈΡ ΠΈΠ»ΠΈ ΡΠ΅ΠΌΠΈΡΡΠΈΠΈ, ΠΏΠΎΠ»ΡΡΠΈΠ² ΠΏΠΎΠ΄Π΄Π΅ΡΠΆΠΊΡ, Π²Π½ΠΈΠΌΠ°Π½ΠΈΠ΅ ΠΈ ΠΏΠΎΠ½ΠΈΠΌΠ°Π½ΠΈΠ΅ ΡΡΠ΅Π΄ΠΈ Β«ΠΏΠΎΠ΄ΠΏΠΈΡΡΠΈΠΊΠΎΠ²Β»
Development of mathematical model of catalytic cracking taking into account the irreversibility criterion of reactions
Conditional quantum logic using two atomic qubits
In this paper we propose and analyze a feasible scheme where the detection of
a single scattered photon from two trapped atoms or ions performs a conditional
unitary operation on two qubits. As examples we consider the preparation of all
four Bell states, the reverse operation that is a Bell measurement, and a CNOT
gate. We study the effect of atomic motion and multiple scattering, by
evaluating Bell inequalities violations, and by calculating the CNOT gate
fidelity.Comment: 23 pages, 8 figures in 11 file
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