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Thermal cracking in urban underground sidewalls is frequently observed when structures are cast in summer and enter service in winter, as seasonal temperature gradients act under structural restraint. To quantify the local stress field…

Computational Physics · Physics 2025-12-10 Ziyan Zhao , Ting Peng , Peng Wu , Chaojun Hu , Qilin Yi , Chuangrui Huang , Junjie Niu , Xiaoxue Xu , Tao Li , Yuan Li

To create a static traversable wormhole, exotic matter that meets the Morris-Thorne conditions is required. It is well known that the expectation value of the vacuum stress-energy tensor can violate the null energy condition, and thus has…

General Relativity and Quantum Cosmology · Physics 2026-03-03 Shun Jiang , Jie Jiang

Laboratory-scale precision experiments are a promising approach to searching for physics beyond the standard model. Non-centrosymmetric solids offer favorable statistical sensitivity for efforts that search for new fields, whose…

Atomic Physics · Physics 2023-07-12 Alexander O. Sushkov , Oleg P. Sushkov , Alexander Yaresko

Static traversable wormhole solutions of the Einstein equations require ``exotic'' matter which violates the weak energy condition. The vacuum stress-energy of quantized fields has been proposed as the source for this matter. Using the…

General Relativity and Quantum Cosmology · Physics 2009-10-28 Brett E. Taylor , William A. Hiscock , Paul R. Anderson

Early age behaviour of concrete is based on complex multi-physical and multiscale phenomena. The predication of both cracking risk and residual stresses in hardened concrete structures is still a challenging task. We propose in this paper a…

Classical Physics · Physics 2008-12-18 Jihad Zreiki , Vincent Lamour , Mohend Chaouche , Micheline Moranville

Motivated by tunnel accidents in the recent past several investigations into the sustained load behavior of adhesive anchors have been initiated. Nevertheless, the reliable life-time prediction of bonded anchor systems based on a relatively…

Applications · Statistics 2020-04-29 Kresimir Nincevic , Ioannis Boumakis , Stefan Meissl , Roman Wan-Wendner

We match an interior solution of a spherically symmetric traversable wormhole to a unique exterior vacuum solution, with a generic cosmological constant, at a junction interface, and the surface stresses on the thin shell are deduced. In…

General Relativity and Quantum Cosmology · Physics 2009-11-10 Francisco S. N. Lobo

Recently, it has been proven that a tensegrity framework that arises from coning the one-skeleton of a convex polytope is rigid. Since such frameworks are not always infinitesimally rigid, this leaves open the question as to whether they…

Combinatorics · Mathematics 2024-04-25 Robert Connelly , Steven J. Gortler , Louis Theran , Martin Winter

Attention has been recently called upon the fact that the weak and null energy conditions and the second law of thermodynamics are violated in wormhole solutions of Einstein's theory with classical, nonminimally coupled, scalar fields as…

High Energy Physics - Theory · Physics 2009-11-07 S. Bellucci , V. Faraoni

The strain-energy formulation of nonlinear elasticity can be extended to the case of significant compression by modulating suitable strain energy terms by a function of relative volume. For isotropic materials this can be accomplished by…

Geophysics · Physics 2021-03-17 B. L. N. Kennett

A sealed high gas pressure detector working in pure argon is assembled. It consists of a 5 cm $\times$ 5 cm PCB THGEM (THick Gaseous Electron Multipliers). The detector structure and experimental setup are described. The performances under…

Instrumentation and Detectors · Physics 2016-12-26 Yu-Ning Zhang , Qian Liu , Hong-Bang Liu , Yi-Gang Xie , Xiao-Rui Lyu , Shi Chen , Wen-Qian Huang , Dao-Jin Hong , Yang-Heng Zheng

In Penning traps electromagnetic forces are used to confine charged particles under well-controlled conditions for virtually unlimited time. Sensitive detection methods have been developed to allow observation of single stored ions. Various…

Atomic Physics · Physics 2022-03-16 Klaus Blaum , Sergey Eliseev , Sven Sturm

The force field of optical tweezers is commonly assumed to be conservative, neglecting the complex action of the scattering force. Using a novel method that extracts local forces from trajectories of an optically trapped particle, we…

Soft Condensed Matter · Physics 2009-11-13 Pinyu Wu , Rongxin Huang , Christian Tischer , Alexandr Jonas , Ernst-Ludwig Florin

A wind tunnel experiment is shown to examine the reproducibility of generated wind fields in the laboratory utilizing an active grid. A motion protocol of the grid, designed to mimic a measured atmospheric wind speed time series, is…

Fluid Dynamics · Physics 2021-01-13 Lars Kröger , Michael Hölling , Gerd Gülker , Joachim Peinke

A new technique was developed for studying the mechanical behavior of nano-scale thin metal films on substrate is presented. The test structure was designed on a novel "paddle" cantilever beam specimens with dimensions as few hundred…

Other Computer Science · Computer Science 2008-12-18 Chi-Jia Tong , Ming-Tzer Lin

Biaxial strain effects on electronic structures and thermoelectric properties of monolayer $\mathrm{PtTe_2}$ are investigated by using generalized gradient approximation (GGA) plus spin-orbit coupling (SOC) for the electron part and GGA for…

Materials Science · Physics 2017-04-26 San-Dong Guo

For the development of charged particle detectors based on straw tubes operating in vacuum, a special measurement technique is required for the evaluation of their mechanical properties. A summary of the known equations that govern straw…

Instrumentation and Detectors · Physics 2018-11-30 L. Glonti , T. Enik , V. Kekelidze , A. Kolesnikov , D. Madigozhin , N. Molokanova , S. Movchan , Yu. Potrebenikov , S. Shkarovskiy

Pressure is the mechanical force per unit area that a confined system exerts on its container. In thermal equilibrium, it depends only on bulk properties (density, temperature, etc.) through an equation of state. Here we show that in a wide…

Statistical Mechanics · Physics 2015-12-17 A. P. Solon , Y. Fily , A. Baskaran , M. E. Cates , Y. Kafri , M. Kardar , J. Tailleur

Effective Field Theory techniques are used to study the leading order quantum corrections to the gravitational wave backreaction. The effective stress-energy tensor is calculated and it is shown that it has a non-vanishing trace that…

General Relativity and Quantum Cosmology · Physics 2018-01-03 Iberê Kuntz

Colloidal systems are often modelled as fluids of hard particles (possibly with an additional soft attraction, e.g. caused by polymers also contained in the suspension). in simulations of such systems, the virial theorem cannot be…

Soft Condensed Matter · Physics 2015-05-30 Debabrata Deb , Dorothea Wilms , Alexander Winkler , Peter Virnau , Kurt Binder