scholarly journals Effective field theory, three-loop perturbative expansion, and their experimental implications in graphene many-body effects

2014 ◽  
Vol 89 (23) ◽  
Author(s):  
Edwin Barnes ◽  
E. H. Hwang ◽  
R. E. Throckmorton ◽  
S. Das Sarma
Keyword(s):  
Field Theory ◽  
Effective Field Theory ◽  
Effective Field ◽  
Perturbative Expansion ◽  
Many Body ◽  
Many Body Effects

scholarly journals Many body methods and effective field theory

2005 ◽  
Vol 762 (1-2) ◽  
pp. 82-101 ◽  
Author(s):  
T. Schäfer ◽  
C.-W. Kao ◽  
S.R. Cotanch
Keyword(s):  
Field Theory ◽  
Effective Field Theory ◽  
Effective Field ◽  
Many Body

scholarly journals RECENT DEVELOPMENTS IN THE NUCLEAR MANY-BODY PROBLEM

2003 ◽  
Vol 17 (28) ◽  
pp. 5111-5126 ◽  
Author(s):  
R. J. FURNSTAHL
Keyword(s):  
Field Theory ◽  
Effective Field Theory ◽  
Body Problem ◽  
Traditional Approach ◽  
Effective Field ◽  
Analytic Structure ◽  
Many Body ◽  
Quarter Century ◽  
Theoretical Approaches ◽  
Recent Developments

The study of quantum chromodynamics (QCD) over the past quarter century has had relatively little impact on the traditional approach to the low-energy nuclear many-body problem. Recent developments are changing this situation. New experimental capabilities and theoretical approaches are opening windows into the richness of many-body phenomena in QCD. A common theme is the use of effective field theory (EFT) methods, which exploit the separation of scales in physical systems. At low energies, effective field theory can explain how existing phenomenology emerges from QCD and how to refine it systematically. More generally, the application of EFT methods to many-body problems promises insight into the analytic structure of observables, the identification of new expansion parameters, and a consistent organisation of many-body corrections, with reliable error estimates.

Effective field theory with genuine many-body forces and tidal effects on neutron stars

2019 ◽  
Vol 340 (1-3) ◽  
pp. 209-212
Author(s):  
M. Razeira ◽  
D. Hadjimichef ◽  
M. V. T. Machado ◽  
F. Köpp ◽  
G. Volkmer ◽  
...  
Keyword(s):  
Field Theory ◽  
Neutron Stars ◽  
Effective Field Theory ◽  
Effective Field ◽  
Many Body ◽  
Tidal Effects ◽  
Body Forces

scholarly journals Effective field theory for neutron stars with genuine many-body forces

2014 ◽  
Vol 335 (6-7) ◽  
pp. 763-768 ◽  
Author(s):  
C. A. Z. Vasconcellos ◽  
R. O. Gomes ◽  
V. Dexheimer ◽  
R. P. Negreiros ◽  
J. Horvath ◽  
...  
Keyword(s):  
Field Theory ◽  
Neutron Stars ◽  
Effective Field Theory ◽  
Effective Field ◽  
Many Body ◽  
Body Forces

An effective field theory for neutron stars with many-body forces, strong ∑-repulsion, andK-and $\bar K^0$ condensation

2015 ◽  
Vol 336 (8-9) ◽  
pp. 880-884 ◽  
Author(s):  
A. Mesquita ◽  
M. Razeira ◽  
R. Ruffini ◽  
J. A. Rueda ◽  
D. Hadjimichef ◽  
...  
Keyword(s):  
Field Theory ◽  
Neutron Stars ◽  
Effective Field Theory ◽  
Effective Field ◽  
Many Body ◽  
Body Forces ◽  
Strong Repulsion

scholarly journals Modern topics in theoretical nuclear physics

2007 ◽  
Vol 85 (3) ◽  
pp. 219-230 ◽  
Author(s):  
B K Jennings ◽  
A Schwenk
Keyword(s):  
Field Theory ◽  
Effective Field Theory ◽  
Nuclear Physics ◽  
Condensed Matter ◽  
Effective Field ◽  
Low Energy ◽  
Many Body ◽  
The Past ◽  
Nuclear Systems ◽  
Low Energy Nuclear Physics

Over the past five years there have been profound advances in nuclear physics based on effective field theory and the renormalization group. In this review, we summarize these advances and discuss how they impact our understanding of nuclear systems and experiments that seek to unravel their unknowns. We discuss future opportunities and focus on modern topics in low-energy nuclear physics, with special attention on the strong connections to many-body atomic and condensed-matter physics, as well as to astrophysics. This makes it an exciting era for nuclear physics. PACS Nos.: 21.60.–n, 21.30.Fe

scholarly journals On systems of maximal quantum chaos

2021 ◽  
Vol 2021 (5) ◽  
Author(s):  
Mike Blake ◽  
Hong Liu
Keyword(s):  
Field Theory ◽  
Effective Field Theory ◽  
Quantum Chaos ◽  
Chaotic Systems ◽  
Quantum Systems ◽  
Chaotic Regime ◽  
Effective Field ◽  
Many Body ◽  
Remarkable Feature ◽  
Prior Literature

Abstract A remarkable feature of chaos in many-body quantum systems is the existence of a bound on the quantum Lyapunov exponent. An important question is to understand what is special about maximally chaotic systems which saturate this bound. Here we provide further evidence for the ‘hydrodynamic’ origin of chaos in such systems, and discuss hallmarks of maximally chaotic systems. We first provide evidence that a hydrodynamic effective field theory of chaos we previously proposed should be understood as a theory of maximally chaotic systems. We then emphasize and make explicit a signature of maximal chaos which was only implicit in prior literature, namely the suppression of exponential growth in commutator squares of generic few-body operators. We provide a general argument for this suppression within our chaos effective field theory, and illustrate it using SYK models and holographic systems. We speculate that this suppression indicates that the nature of operator scrambling in maximally chaotic systems is fundamentally different to scrambling in non-maximally chaotic systems. We also discuss a simplest scenario for the existence of a maximally chaotic regime at sufficiently large distances even for non-maximally chaotic systems.

scholarly journals One loop verification of SMEFT Ward Identities

2021 ◽  
Vol 10 (6) ◽  
Author(s):  
Tyler corbett ◽  
Michael Trott
Keyword(s):  
Field Theory ◽  
Standard Model ◽  
Effective Field Theory ◽  
Background Field ◽  
Automatic Generation ◽  
Effective Field ◽  
Perturbative Expansion ◽  
Leading Order ◽  
Loop Order ◽  
Ward Identities

We verify Standard Model Effective Field Theory Ward identities to one loop order when background field gauge is used to quantize the theory. The results we present lay the foundation of next to leading order automatic generation of results in the SMEFT, in both the perturbative and non-perturbative expansion using the geoSMEFT formalism, and background field gauge.

scholarly journals COVARIANT EFFECTIVE FIELD THEORY FOR BULK PROPERTIES OF NUCLEI

2003 ◽  
Vol 17 (28) ◽  
pp. 5163-5173
Author(s):  
BRIAN D. SEROT
Keyword(s):  
Field Theory ◽  
Effective Field Theory ◽  
Density Functional ◽  
Energy Functional ◽  
Effective Field ◽  
Quantum Field Theories ◽  
Many Body ◽  
Functional Theory ◽  
Covariant Quantum ◽  
Electromagnetic Structure

Recent progress in Lorentz-covariant quantum field theories of the nuclear many-body problem (quantum hadrodynamics or QHD) is discussed. The importance of modern perspectives in effective field theory and density functional theory for understanding the successes of QHD is emphasised. The inclusion of hadronic electromagnetic structure and of nonanalytic terms in the energy functional is also considered.

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