QED3 as an effective theory of the pseudogap phase in underdoped cuprates

2007 ◽  
Author(s):  
Iorwerth Owain Thomas
Keyword(s):  
Effective Theory ◽  
Pseudogap Phase ◽  
Underdoped Cuprates

scholarly journals Magnetism and Superconductivity in the Pseudogap Phase of Underdoped Cuprates

2013 ◽  
Vol 449 ◽  
pp. 012006 ◽  
Author(s):  
A J A James ◽  
R M Konik ◽  
K Huang ◽  
W-Q Chen ◽  
T M Rice ◽  
...  
Keyword(s):  
Pseudogap Phase ◽  
Underdoped Cuprates

scholarly journals Fluctuations and the Higgs Mechanism in Underdoped Cuprates

2020 ◽  
Vol 11 (1) ◽  
pp. 301-323 ◽  
Author(s):  
C. Pépin ◽  
D. Chakraborty ◽  
M. Grandadam ◽  
S. Sarkar
Keyword(s):  
High Temperature ◽  
Cuprate Superconductors ◽  
High Temperature Superconductivity ◽  
Higgs Mechanism ◽  
Pseudogap Phase ◽  
Theoretical Approaches ◽  
Underdoped Region ◽  
Underdoped Cuprates ◽  
The Rich ◽  
Ubiquitous Presence

The physics of the pseudogap phase of high-temperature cuprate superconductors has been an enduring mystery over the past 30 years. The ubiquitous presence of the pseudogap phase in underdoped cuprates suggests that understanding it is key to unraveling the origin of high-temperature superconductivity. We review various theoretical approaches to this problem, emphasizing the concept of emergent symmetries in the underdoped region of those compounds. We differentiate these theories by considering a few fundamental questions related to the rich phenomenology of these materials. Lastly, we discuss a recent idea regarding two kinds of entangled preformed pairs that open a gap at the pseudogap onset temperature, T*, through a specific Higgs mechanism. We review the experimental consequences of this line of thought.

scholarly journals INTERPLAY OF D-WAVE SUPERCONDUCTIVITY AND ANTIFERROMAGNETISM IN THE CUPRATE SUPERCONDUCTORS: PHASE SEPARATION AND THE PSEUDOGAP PHASE DIAGRAM

2005 ◽  
Vol 19 (25) ◽  
pp. 1295-1302 ◽  
Author(s):  
W. P. SU
Keyword(s):  
Phase Diagram ◽  
Phase Separation ◽  
Cuprate Superconductors ◽  
Nearest Neighbor ◽  
Superconducting Transition ◽  
Zero Temperature ◽  
Pseudogap Phase ◽  
Underdoped Cuprates ◽  
D Wave ◽  
Interaction Free Energy

To understand the interplay of d-wave superconductivity and antiferromagnetism in the cuprates, we consider a two-dimensional extended Hubbard model with nearest neighbor attractive interaction. Free energy of the homogeneous (coexisting superconducting and antiferromagnetic) state calculated as a function of the band filling shows a region of phase separation. The phase separation caused by the intersite attractive force leads to novel insights into salient features of the pseudogap phase diagram. In particular, the upper crossover curve can be identified with the phase separation boundary. At zero temperature, the boundary constitutes a critical point. The inhomogeneity observed in the underdoped cuprates is a consequence of incomplete phase separation. The disorder (inhomogeneity) brings about the disparity between the high pseudogap temperature and the low bulk superconducting transition temperature.

Effective Field Theory in Particle Physics and Cosmology

2020 ◽  
Keyword(s):  
Field Theory ◽  
Effective Field Theory ◽  
Particle Physics ◽  
Large Scale ◽  
Effective Field ◽  
Effective Theory ◽  
Soft Collinear Effective Theory ◽  
Multiple Length Scales ◽  
Cosmological Observations ◽  
Standard Models

Effective field theory (EFT) is a general method for describing quantum systems with multiple-length scales in a tractable fashion. It allows us to perform precise calculations in established models (such as the standard models of particle physics and cosmology), as well as to concisely parametrize possible effects from physics beyond the standard models. EFTs have become key tools in the theoretical analysis of particle physics experiments and cosmological observations, despite being absent from many textbooks. This volume aims to provide a comprehensive introduction to many of the EFTs in use today, and covers topics that include large-scale structure, WIMPs, dark matter, heavy quark effective theory, flavour physics, soft-collinear effective theory, and more.

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