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We study the melting of a double stranded DNA in the presence of stretching forces, via 3D Monte-Carlo simulations, exactly solvable models and heuristic arguments. The resulting force-temperature phase diagram is dramatically different for…

Soft Condensed Matter · Physics 2008-07-22 D. Marenduzzo , A. Maritan , E. Orlandini , F. Seno , A. Trovato

We derive the single molecule equation of state (force-extension relation) for DNA molecules bearing sliding loops and deflection defects. Analytical results are obtained in the large force limit by employing an analogy with instantons in…

Soft Condensed Matter · Physics 2009-11-11 Igor M. Kulic , H. Mohrbach , V. Lobaskin , R. Thaokar , H. Schiessel

Recent advances in the understanding of the melting behavior of double-stranded DNA with statistical mechanics methods lead to improved estimates of the weight factors for the dissociation events of the chains, in particular for interior…

Statistical Mechanics · Physics 2009-11-07 Ralf Blossey , Enrico Carlon

We investigate observational constraints from present and future supernova data on a large class of decaying vacuum cosmologies. In such scenarios the present value of the vacuum energy density is quantified by a positive $\beta$ parameter…

Astrophysics · Physics 2009-11-07 J. S. Alcaniz , J. M. F. Maia

The binding energy parameter $\lambda$ plays a vital role in common envelope evolution. Though it is well known that $\lambda$ takes different values for stars with different masses and varies during stellar evolution, it has been…

Solar and Stellar Astrophysics · Physics 2016-08-17 Cheng Wang , Kun Jia , Xiang-Dong Li

The energetic and transport properties of a double-stranded DNA dodecamer encapsulated in hydrophobic carbon nanotubes are probed employing two limiting nanotube diameters, D=4 nm and D=3 nm, corresponding to (51,0) and (40,0) zig-zag…

Biological Physics · Physics 2016-05-06 Fernando J. A. L. Cruz , Juan J. de Pablo , José P. B. Mota

We report on field-induced variations of the microwave surface resistance at 9.6 GHz of Ba(0.6)K(0.4)BiO(3) crystals. Energy losses have been investigated as a function of the static magnetic field in the range of temperatures 4.2 K - Tc.…

Superconductivity · Physics 2007-05-23 S. Fricano , M. Bonura , A. Agliolo Gallitto , M. Li Vigni , L. A. Klinkova , N. V. Barkovskii

We prove a lower bound on the eigenvalues $\lambda_k$, $k\in\mathbb{N}$, of the Dirichlet Laplacian of a bounded domain $\Omega\subset\mathbb{R}^n$ of volume $V$: $$ \lambda_k \geq C_n\bigg( \delta\frac{k}{V}\bigg)^{2/n} $$ where $\delta$…

Spectral Theory · Mathematics 2015-12-29 Neal Coleman

The maximum volume ($\Omega$) of a droplet that can remain attached to a horizontal fiber defines the stability limit of droplet-fiber interactions, phenomena common in nature and critical to diverse engineering applications. Existing…

Fluid Dynamics · Physics 2025-12-29 Yi Zhang , Apurav Tambe , Zhao Pan

We explore the backreaction model based on the template metric proposed in Larena et al. (2008) constraining the matter density parameter $\Omega_m^{D_0}$ and the Dark Energy parameter $w$ with recent data. We provide constraints based on…

Cosmology and Nongalactic Astrophysics · Physics 2016-01-25 Matteo Chiesa , Davide Maino , Elisabetta Majerotto

Double-stranded DNA `overstretches' at a pulling force of about 65 pN, increasing in length by a factor of 1.7. The nature of the overstretched state is unknown, despite its considerable importance for DNA's biological function and…

Statistical Mechanics · Physics 2009-11-13 Stephen Whitelam , Sander Pronk , Phillip L. Geissler

The topological susceptibility of the quenched QCD vacuum is measured on large lattices for three $\beta$ values from $6.0$ to $6.4$. Charges possibly induced by $O(a)$ dislocations are identified and shown to have little effect on the…

High Energy Physics - Lattice · Physics 2009-10-22 Jeffrey Grandy , Rajan Gupta

Continuous Nb wires, 7-15 nm in diameter, have been fabricated by sputter-coating single fluorinated carbon nanotubes. Transmission electron microscopy revealed that the wires are polycrystalline, having grain sizes of about 5 nm. The…

Superconductivity · Physics 2009-11-10 Andrey Rogachev , Alexey Bezryadin

We study the single-species diffusion-annihilation process with a time-dependent reaction rate, lambda(t)=lambda_0 t^-omega. Scaling arguments show that there is a critical value of the decay exponent omega_c(d) separating a…

Statistical Mechanics · Physics 2007-05-23 L. Turban

We have fabricated (Ga,Mn)As nanostructures in which domain walls can be pinned by sub-10 nm constrictions. Controlled by shape anisotropy, we can switch the regions on either side of the constriction to either parallel or antiparallel…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 C. Ruester , T. Borzenko , C. Gould , G. Schmidt , L. W. Molenkamp , X. Liu , T. J. Wojtowicz , J. K. Furdyna , Z. G. Yu , M. E. Flatte

We report the synthesis, x-ray diffraction, magnetic susceptibility and specific heat measurements on polycrystalline samples of undoped LiNi2P3O10 and samples with non-magnetic impurity (Zn2+, S = 0) and magnetic impurity (Cu2+, S = 1/2)…

Strongly Correlated Electrons · Physics 2011-10-28 P. Khuntia , A. V. Mahajan

Recent observation of beta decay of 115-In to the first excited level of 115-Sn with an extremely low Q_beta value (Q_beta ~ 1 keV) could be used to set a limit on neutrino mass. To give restriction potentially competitive with those…

Nuclear Experiment · Physics 2009-11-11 C. M. Cattadori , M. De Deo , M. Laubenstein , L. Pandola , V. I. Tretyak

Low background experiments need a suppression of cosmogenically induced events. The GERDA experiment located at LNGS is searching for the neutrinless double beta decay of $^{76}$Ge. It is equipped with an active muon veto the main part of…

The superluminal neutrinos detected by OPERA indicates Lorentz invariance violation (LIV) of the neutrino sector at the order of $10^{-5}$. We study the implications of the result in this work. We find that such a large LIV implied by OPERA…

High Energy Physics - Phenomenology · Physics 2015-03-19 Xiao-Jun Bi , Peng-Fei Yin , Zhao-Huan Yu , Qiang Yuan

We report resistivity measurements from 0.03 K to 10 K in a dilute high mobility 2D electron system. Using an undoped GaAs/AlGaAs heterojunction in a gated field-effect transistor geometry, a wide range of densities, $0.16 \times 10^{10}…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 M. P. Lilly , J. L. Reno , J. A. Simmons , I. B. Spielman , J. P. Eisenstein , L. N. Pfeiffer , K. W. West , E. H. Hwang , S. Das Sarma