scholarly journals Strong interaction effects at a Fermi surface in a model for voltage-biased bilayer graphene

2015 ◽  
Vol 92 (23) ◽  
Author(s):  
Wes Armour ◽  
Simon Hands ◽  
Costas Strouthos
Keyword(s):  
Fermi Surface ◽  
Strong Interaction ◽  
Interaction Effects ◽  
Bilayer Graphene

scholarly journals Stress Mediating Genes in Aging, Health, and Longevity Traits: Effects of Multiple Interactions

2020 ◽  
Vol 4 (Supplement_1) ◽  
pp. 286-286
Author(s):  
Anatoliy Yashin ◽  
Dequing Wu ◽  
Konstantin Arbeev ◽  
Arseniy Yashkin ◽  
Galina Gorbunova ◽  
...  
Keyword(s):  
Strong Interaction ◽  
Genetic Interaction ◽  
Interaction Effects ◽  
Genetic Interactions ◽  
Risk Scores ◽  
Data Sets ◽  
Interaction Patterns ◽  
Polygenic Risk ◽  
Drug Candidates ◽  
Aging Health

Abstract Persistent stress of external or internal origin accelerates aging, increases risk of aging related health disorders, and shortens lifespan. Stressors activate stress response genes, and their products collectively influence traits. The variability of stressors and responses to them contribute to trait heterogeneity, which may cause the failure of clinical trials for drug candidates. The objectives of this paper are: to address the heterogeneity issue; to evaluate collective interaction effects of genetic factors on Alzheimer’s disease (AD) and longevity using HRS data; to identify differences and similarities in patterns of genetic interactions within two genders; and to compare AD related genetic interaction patterns in HRS and LOADFS data. To reach these objectives we: selected candidate genes from stress related pathways affecting AD/longevity; implemented logistic regression model with interaction term to evaluate effects of SNP-pairs on these traits for males and females; constructed the novel interaction polygenic risk scores for SNPs, which showed strong interaction potential, and evaluated effects of these scores on AD/longevity; and compared patterns of genetic interactions within the two genders and within two datasets. We found there were many genes involved in highly significant interactions that were the same and that were different within the two genders. The effects of interaction polygenic risk scores on AD were strong and highly statistically significant. These conclusions were confirmed in analyses of interaction effects on longevity trait using HRS data. Comparison of HRS to LOADFS data showed that many genes had strong interaction effects on AD in both data sets.

scholarly journals Strong interaction effects in antiprotonic 6Li/7Li atoms

1984 ◽  
Vol 137 (5-6) ◽  
pp. 323-328 ◽  
Author(s):  
R. Guigas ◽  
P. Blüm ◽  
H. Koch ◽  
M. Meyer ◽  
H. Poth ◽  
...  
Keyword(s):  
Strong Interaction ◽  
Interaction Effects

Strong-interaction effects on the baryon semileptonic decay form factors

1988 ◽  
Vol 37 (11) ◽  
pp. 3197-3205 ◽  
Author(s):  
Larry J. Carson ◽  
Robert J. Oakes ◽  
Charles R. Willcox
Keyword(s):  
Strong Interaction ◽  
Semileptonic Decay ◽  
Form Factors ◽  
Interaction Effects ◽  
Decay Form

BOOTSTRAPPING A HEAVY HIGGS

1988 ◽  
Vol 03 (03) ◽  
pp. 295-301 ◽  
Author(s):  
A.P. CONTOGOURIS ◽  
N. MEBARKI ◽  
D. ATWOOD ◽  
H. TANAKA
Keyword(s):  
Simple Model ◽  
Strong Interaction ◽  
Higgs Mass ◽  
Bound State ◽  
Interaction Effects ◽  
Phase Shifts ◽  
Dispersion Relations ◽  
S Wave ◽  
Self Consistent ◽  
Consistent Solution

Possible strong interaction effects arising when the Higgs mass MH is sufficiently large are investigated in the system of interacting Higgs, using dispersion relations (N/D method). A simple model indicates that for MH≳1 TeV several such effects are present: an 1=0 bound state, large s-wave phase shifts and a resonance-like state. In the range 1.5≲MH≲3.5 TeV the above bound state amounts to an approximate bootstrap (self-consistent) solution for the Higgs with respect to both its mass and coupling. Other aspects of the H-H strong interaction system are also investigated.

scholarly journals Strong interaction effects in Σ- atoms

2020 ◽  
Vol 4 ◽  
pp. 59
Author(s):  
Th. Petridou
Keyword(s):  
Strong Interaction ◽  
Nuclear Spin ◽  
Interaction Effects ◽  
Atomic Energy ◽  
Orbit Coupling ◽  
Simplified Model ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Matrix Approach ◽  
S Matrix

An approximation is made for the Σ- atomic energy shifts and widths due to strong interaction central and spin-orbit parts of the potential with the use of the S-Matrix Approach, introduced by DelofF. This simplified model is applied in 12C_Σ in connection with the Σ-hypernuclear data: 12C_Σ. It is concluded that there is an essential influence of the strong interaction and especially of the nuclear spin-orbit coupling in the spectra of Σ-12C, mainly for the p-shell.

scholarly journals Measurement of strong-interaction effects in light antiprotonic atoms

1987 ◽  
Vol 466 (3-4) ◽  
pp. 667-684 ◽  
Author(s):  
H. Poth ◽  
H. Barth ◽  
G. Büche ◽  
A.D. Hancock ◽  
H. Koch ◽  
...  
Keyword(s):  
Strong Interaction ◽  
Interaction Effects ◽  
Antiprotonic Atoms

Measurement of strong interaction effects in kaonic atoms

1979 ◽  
Vol 329 (3) ◽  
pp. 407-428 ◽  
Author(s):  
C.J. Batty ◽  
S.F. Biagi ◽  
M. Blecher ◽  
S.D. Hoath ◽  
R.A.J. Riddle ◽  
...  
Keyword(s):  
Strong Interaction ◽  
Interaction Effects ◽  
Kaonic Atoms

scholarly journals Moiré with flat bands is different

2019 ◽  
Vol 50 (3) ◽  
pp. 24-26
Author(s):  
Tero T. Heikkilä ◽  
Timo Hyart
Keyword(s):  
Critical Temperature ◽  
Fermi Surface ◽  
Room Temperature ◽  
Electronic States ◽  
Bilayer Graphene ◽  
Flat Bands ◽  
Twisted Bilayer Graphene

Recent experimental discoveries of superconductivity and other exotic electronic states in twisted bilayer graphene (TBG) call for a reconsideration of our traditional theories of these states, usually based on the assumption of the presence of a Fermi surface. Here we show how such developments may even help us finding mechanisms of increasing the critical temperature of superconductivity towards the room temperature.

DISPERSION RELATIONS APPROACH FOR HEAVY HIGGS

1987 ◽  
Vol 02 (04) ◽  
pp. 1075-1083 ◽  
Author(s):  
A.P. Contogouris ◽  
N. Mebarki ◽  
D. Atwood
Keyword(s):  
Strong Interaction ◽  
Higgs Mass ◽  
Bound State ◽  
Interaction Effects ◽  
Dispersion Relations ◽  
Tree Level ◽  
Gauge Bosons ◽  
Self Consistent ◽  
Consistent Solution

The system of interacting Higgs and longitudinal gauge bosons, when the Higgs mass MH varies above 1 TeV, is studied using dispersion relations (N/D method). Models satisfying unitarity and analyticity constraints are constructed and solved exactly. For MH≲0.6 TeV the dispersive and perturbative (tree level) amplitudes are similar. For MH≳1.5 TeV , however, they much differ in structure. For MH≃1.5, in ZZ→ZZ the dispersive amplitudes exceed the perturbative ones by factors 2~4. There are indications of strong interaction effects: In HH→HH there is an ℓ=0 bound state, which can be taken as the Higgs itself; in fact, for MH≃2.5 there is an almost self-consistent solution with respect to the mass, and very roughly with respect to the coupling. There is also some indication of a resonance in ZZ→ZZ, as well as in HH→HH.

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