M493 Spinal Versus General Anaesthesia for Hysterectomy

Mamo, N.; Refalo, M.J.; Mamo, John; Vella, Claudio

doi:10.1016/s0020-7292(12)61681-6

Intl J Gynecology & Obste

2012

DOI: 10.1016/s0020-7292(12)61681-6

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M493 Spinal Versus General Anaesthesia for Hysterectomy

N. Mamo¹,

M.J. Refalo²,

John Mamo³

et al.

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2014

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“…Motivated by the anomalous flow of direct photons in heavy ion collisions, the thermal photon production with a constant magnetic field in holography have been studied [57][58][59][60][61][62], where the thermal-photon v 2 in the SS model and D3/D7 system were presented in [59] and [62], respectively.…”

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confidence: 99%

Holographic chiral electric separation effect

Yang

2014

Phys. Rev. D

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We investigate the chiral electric separation effect, where an axial current is induced by an electric field in the presence of both vector and axial chemical potentials, in a strongly coupled plasma via the Sakai-Sugimoto model with an U (1)R × U (1)L symmetry. By introducing different chemical potentials in U (1)R and U (1)L sectors, we compute the axial direct current (DC) conductivity stemming from the chiral current and the normal DC conductivity. We find that the axial conductivity is approximately proportional to the product of the axial and vector chemical potentials for arbitrary magnitudes of the chemical potentials. We also evaluate the axial alternating current (AC) conductivity induced by a frequency-dependent electric field, where the oscillatory behavior with respect to the frequency is observed. I. INTRODUCTIONThe influence from electromagnetic fields on quark gluon plasma(QGP) has been widely studied recently. In relativistic heavy ion collisions, a strong magnetic field with the scale eB ∼ m 2 π perpendicular to the reaction plane is generated by two fast-moving nuclei in early stages [1]. Based on the existence of such a strong magnetic field, the so-called chiral magnetic effect(CME) was proposed in the presence of the axial charge density due to triangle anomaly [1][2][3][4]. This effect has been further derived from varieties of different approaches, including relativistic hydrodynamics [5-9], kinetic *

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confidence: 99%

Holographic chiral electric separation effect

Yang

2014

Phys. Rev. D

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“…Motivated by the anomalous flow of direct photons in heavy ion collisions, the thermal photon production with constant magnetic field in holography have been studied [28][29][30][31][32]. In [29], it is shown that the photon production perpendicular to the magnetic field in D3/D7 and D4/D6 embeddings with massless quarks is enhanced.…”

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Elliptic flow from thermal photons with magnetic field in holography

Müller

Yang

2014

Phys. Rev. D

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We compute the elliptic flow v2 of thermal photons in a strongly coupled plasma with constant magnetic field via gauge/gravity duality. The D3/D7 embedding is applied to generate the contributions from massive quarks. By considering the cases in 2+1 flavor SYM analogous to the photon production in QGP, we obtain the thermal-photon v2, which is qualitatively consistent with the direct-photon v2 measured in RHIC at intermediate energy. However, due to the simplified setup, the thermal-photon v2 in our model should be regarded as the upper bound for the v2 generated by solely magnetic field in the strongly coupled scenario.The elliptic flow v 2 characterizes the momentum anisotropy of produced particles in heavy ion collisions. The recent observations from RHIC and LHC revealed surprising results, where the large elliptic flow of direct photons has been measured [1,2]. Unlike the hadronic flow, the large flow of direct photons is unexpected since the high-energy photons are presumed to be generated in early times, where the initial flow should be relatively small compared to the flow built up by hydrodynamics. The anisotropy flow of thermal photons with viscous hydrodynamics has been recently reported in [3,4]. In theory, novel mechanisms should be introduced to break the azimuthal symmetry of photon production. The magnetic field led by colliding nuclei has been recently considered as one of possible candidates to bring about the large flow. In the weakly coupled scenario, the photon production with magnetic field has been studied in a variety of approaches [5][6][7][8][9]. Other mechanism such as the synchrotron radiation from the interaction of escaping quarks with the collective confining color field has been proposed in [10].However, in the strongly coupled scenario, the perturbative approaches may not be applied. The AdS/CFT correspondence [11][12][13][14][15], a holographic duality between a strongly coupled N = 4 Super Yang-Mills(SYM) theory and a classical supergravity in the asymptotic AdS 5 × S 5 background in the limit of large N c and strong t'Hooft

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M493 Spinal Versus General Anaesthesia for Hysterectomy

Cited by 2 publications

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Holographic chiral electric separation effect

Holographic chiral electric separation effect

Elliptic flow from thermal photons with magnetic field in holography

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