scholarly journals Note on a new fundamental length scale l instead of the Newtonian constant G

2011 ◽  
Vol 54 (10) ◽  
pp. 1771-1774 ◽  
Author(s):  
LiJing Shao ◽  
BoQiang Ma
Keyword(s):  
Length Scale ◽  
Fundamental Length ◽  
Newtonian Constant

Cosmogenesis and the origin of the fundamental length scale

1980 ◽  
Vol 170 (2) ◽  
pp. 228-264 ◽  
Author(s):  
R. Brout ◽  
F. Englert ◽  
J.-M. Frère ◽  
E. Gunzig ◽  
P. Nardone ◽  
...  
Keyword(s):  
Length Scale ◽  
Fundamental Length

Lateral Nonuniformity And Mesoscale Effects in Giant Area Electronics

2005 ◽  
Vol 870 ◽  
Author(s):  
V. G. Karpov ◽  
Diana Shvydka ◽  
Yann Roussillon
Keyword(s):  
Thin Film ◽  
Light Intensity ◽  
Practical Method ◽  
New Physics ◽  
Length Scale ◽  
Device Performance ◽  
Large Area ◽  
Length Scales ◽  
Fundamental Length ◽  
Thin Film Photovoltaics

AbstractThe recently developed physics of thin-film photovoltaics is suggested to be representative of other giant area electronics. We show that (i) giant-area devices are intrinsically nonuniform in the lateral directions, (ii) the nonuniformity spans length scales from millimeters to meters depending on external drivers such as light intensity and bias, and (iii) it significantly impacts the device performance. We derive a fundamental length scale that discriminates between the cases of small and large-area devices, and beyond which a new physics emerges. In addition, we present a practical method of mitigating the nonuniformity effects.

scholarly journals A QUANTUM-GRAVITY PERSPECTIVE ON SEMICLASSICAL vs. STRONG-QUANTUM DUALITY

2006 ◽  
Vol 03 (07) ◽  
pp. 1293-1302
Author(s):  
JOSÉ M. ISIDRO
Keyword(s):  
Quantum Gravity ◽  
Degrees Of Freedom ◽  
The Other ◽  
Length Scale ◽  
Specific Nature ◽  
Action Integral ◽  
Fundamental Length ◽  
Starting Point ◽  
Duality Groups ◽  
Quantum Duality

It has been argued that, underlying the M-theoretic dualities, there should exist a symmetry relating the semiclassical and the strong-quantum regimes of a given action integral. On the other hand, a field-theoretic exchange between long and short distances (similar in nature to the T-duality of strings) has been shown to provide a starting point for quantum gravity, in that this exchange enforces the existence of a fundamental length scale on spacetime. In this paper, we prove that the above semiclassical vs. strong-quantum symmetry is equivalent to the exchange of long and short distances. Hence the former symmetry, as much as the latter, also enforces the existence of a length scale. We apply these facts in order to classify all possible duality groups of a given action integral on spacetime, regardless of its specific nature and of its degrees of freedom.

scholarly journals HYPOTHESIS OF PATH INTEGRAL DUALITY: APPLICATIONS TO QED

2001 ◽  
Vol 10 (03) ◽  
pp. 351-365 ◽  
Author(s):  
S. SHANKARANARAYANAN ◽  
T. PADMANABHAN
Keyword(s):  
Magnetic Fields ◽  
Path Integral ◽  
Radiative Correction ◽  
Gauge Invariance ◽  
Length Scale ◽  
Quantum Field ◽  
First Order ◽  
Dirac Particles ◽  
Fundamental Length ◽  
Extra Factor

We use the modified propagator for quantum field based on a "principle of path integral duality" proposed earlier in a paper by Padmanabhan to investigate several results in QED. This procedure modifies the Feynman propagator by the introduction of a fundamental length scale. We use this modified propagator for the Dirac particles to evaluate the first order radiative corrections in QED. We find that the extra factor of the modified propagator acts like a regulator at the Planck scales thereby removing the divergences that otherwise appear in the conventional radiative correction calculations of QED. We find that: (i) all the three renormalization factors Z1, Z2, and Z3 pick up finite corrections and (ii) the modified propagator breaks the gauge invariance at a very small level of [Formula: see text]. The implications of this result to generation of the primordial seed magnetic fields are discussed.

scholarly journals Experimental Observation of a Fundamental Length Scale of Waves in Random Media

2013 ◽  
Vol 111 (18) ◽  
Author(s):  
S. Barkhofen ◽  
J. J. Metzger ◽  
R. Fleischmann ◽  
U. Kuhl ◽  
H.-J. Stöckmann
Keyword(s):  
Experimental Observation ◽  
Random Media ◽  
Length Scale ◽  
Fundamental Length

scholarly journals Past and Future Blurring at Fundamental Length Scale

2010 ◽  
Vol 105 (21) ◽  
Author(s):  
M. J. Neves ◽  
C. Farina ◽  
M. V. Cougo-Pinto
Keyword(s):  
Length Scale ◽  
Fundamental Length

scholarly journals Applications of Polymeric Quantisation

2019 ◽  
Vol 206 ◽  
pp. 09016
Author(s):  
Chen Jia Pern Neville ◽  
Ching Chee Leong
Keyword(s):  
Harmonic Oscillator ◽  
Loop Quantum Gravity ◽  
Correction Term ◽  
High Energy ◽  
Physical Significance ◽  
Length Scale ◽  
Basic Principles ◽  
Thermodynamical Properties ◽  
Fundamental Length ◽  
Additional Correction

Polymer quantisation is a background independent quantisation scheme inspired by loop quantum gravity. Under this quantisation scheme, it predicts that space is discretised and changes in multiples of a fundamental length scale λ. As a result, the momentum operator is not well-defined. However, a new operator can be defined such that a Schrödinger-like equation can be retrieved. The solutions give rise to eigenspectra which are similar to the standard counterparts, with an additional correction term due to λ. We present the basic principles of the polymer representation and apply it to the harmonic oscillator to study the phenomenological implications of such solutions. In addition, we consider an ensemble of such oscillators and calculated the thermodynamical properties for systems that safisty the bosonic and fermionic statistics. The results presented may have physical significance at high energy scales or in exotic matter.

scholarly journals EXOTIC STATISTICS FOR ORDINARY PARTICLES IN QUANTUM GRAVITY

2008 ◽  
Vol 17 (13n14) ◽  
pp. 2475-2484
Author(s):  
JOHN SWAIN
Keyword(s):  
Black Holes ◽  
Quantum Gravity ◽  
Loop Quantum Gravity ◽  
Piecewise Linear ◽  
Uncertainty Relations ◽  
Length Scale ◽  
Linear Fashion ◽  
Fundamental Length ◽  
Small Scales ◽  
Gravity Effects

Objects exhibiting statistics other than the familiar Bose and Fermi ones are natural in theories with topologically nontrivial objects, including geons, strings, and black holes. It is argued here from several viewpoints that the statistics of ordinary particles with which we are already familiar are likely to be modified due to quantum gravity effects. In particular, such modifications are argued to be present in loop quantum gravity and in any theory which represents space–time in a fundamentally piecewise-linear fashion or, more generally, which has large curvature fluctuations at small scales. The appearance of unusual statistics may be a generic feature (such as the deformed position–momentum uncertainty relations and the appearance of a fundamental length scale) which is to be expected in any theory of quantum gravity, and which could be testable.

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