scholarly journals Two-particle spectral function for disordered s -wave superconductors: Local maps and collective modes

2020 ◽  
Vol 101 (2) ◽  
Author(s):  
Abhisek Samanta ◽  
Amulya Ratnakar ◽  
Nandini Trivedi ◽  
Rajdeep Sensarma
Keyword(s):  
Spectral Function ◽  
Collective Modes ◽  
S Wave

Collective modes of Weyl fermions with repulsive S-wave interaction

2020 ◽  
Vol 29 (11) ◽  
pp. 117201
Author(s):  
Xun-Gao Wang ◽  
Huan-Yu Wang ◽  
Jiang-Min Zhang ◽  
Wu-Ming Liu
Keyword(s):  
Wave Interaction ◽  
Collective Modes ◽  
S Wave ◽  
Weyl Fermions

scholarly journals Temperature-dependent spectral function of a Kondo impurity in an s -wave superconductor

2019 ◽  
Vol 99 (17) ◽  
Author(s):  
Chenrong Liu ◽  
Yixuan Huang ◽  
Yan Chen ◽  
C. S. Ting
Keyword(s):  
Spectral Function ◽  
S Wave ◽  
Temperature Dependent

Density waves in disk galaxies

1967 ◽  
Vol 31 ◽  
pp. 313-317 ◽  
Author(s):  
C. C. Lin ◽  
F. H. Shu
Keyword(s):  
Mathematical Analysis ◽  
Spiral Structure ◽  
Stellar System ◽  
Collective Modes ◽  
Disk Galaxies ◽  
Spiral Pattern ◽  
Density Waves ◽  
The Galaxy ◽  
Detailed Mathematical Analysis

Density waves in the nature of those proposed by B. Lindblad are described by detailed mathematical analysis of collective modes in a disk-like stellar system. The treatment is centered around a hypothesis of quasi-stationary spiral structure. We examine (a) the mechanism for the maintenance of this spiral pattern, and (b) its consequences on the observable features of the galaxy.

COLLECTIVE MODES IN ARRAYS OF SUPERCONDUCTING BRIDGES

1978 ◽  
Vol 39 (C6) ◽  
pp. C6-588-C6-590 ◽  
Author(s):  
S. N. Artemenko ◽  
A. F. Volkov ◽  
A. V. Zaitsev
Keyword(s):  
Collective Modes

PULMONARY VASCULAR RESISTANCE BY ECHOCARDIOGRAPHY-DOPPLER IN ISCHEMIC HEART DISEASE WITH LEFT VENTRCULAR SYSTOLIC DYSFUNCTION

2017 ◽  
pp. 89-94
Author(s):  
Ke Toan Tran ◽  
Thi Thuy Hang Nguyen
Keyword(s):  
Heart Disease ◽  
Ischemic Heart Disease ◽  
Pulmonary Vascular Resistance ◽  
Vascular Resistance ◽  
Tricuspid Valve ◽  
Left Ventricular ◽  
Ischemic Heart ◽  
Left Ventricular Ejection ◽  
S Wave ◽  
Echocardiography Doppler

Objective: To determine pulmonary vascular resistance (PVR) by echocardiography - Doppler and to find correlation between pulmonary vascular resistance with left ventricular EF, PAPs, TAPSE, tissue S-wave of the tricuspid valve in patients with ischemic heart disease. Subjects and Methods: We studied on 82 patients with ischemic heart disease and EF<40% including 36 females, 46 males. Patients were estimated for pulmonary vascular resistance, EF, PAPs, TAPSE, tissue S-wave of the tricuspid valve by echocardiographyDoppler. Results: 64.6% of patients are increased PVR, average of PVR is 3.91 ± 1.85 Wood units and it is increasing with NYHA severity. There are negative correlations between pulmonary vascular resistance with left ventricular ejection fraction (r = - 0.545; p <0.001), TAPSE index (r= -0.590; p <0.001) and tissue S-wave of the tricuspid valve (r = -0.420; p <0.001); positive correlation with systolic pulmonary artery pressure (r = 0.361, p = 0.001), Conclusions: Increased PVR is the primary mechanism for pulmonary hypertension and right heart failure in patients with left heart disease. Determination of PVR in patients with left ventricular dysfunction by echocardiography is important in clinical practice. Key words: Echocardiography-Doppler; Pulmonary vascular resistance; ischemic heart disease

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