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"Physics Methodology."
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Generalized frameworks: Structuring searches for new physics
Many areas of frontier physics are confronted with the crisis of a lack of accessible, direct evidence. As a result, direct model building has failed to lead to any new empirical discoveries. In this paper I argue that these areas of frontier physics have developed common methods for turning precision measurements of known quantities into potential evidence for anomalies hinting at new physics. This
method of framework generalization
has arisen as a sort of model-independent method for generalizing beyond known physics and organizing experimental searches. I argue that this method is well-justified given the current epistemic landscape, and that theory construction in general is much broader than simply building new dynamical models.
Journal Article
Creative understanding
\"A pleasure to read. Gracefully written by a scholar well grounded in the relevant philosophical, historical, and technical background. . . . a helpfully clarifying review and analysis of some issues of importance to recent philosophy of science and a source of some illuminating insights.\"—Burke Townsend, Philosophy of Science
eBook
Particles and waves : historical essays in the philosophy of science
This volume brings together six published and two new essays by the noted philosopher of science, Peter Achinstein. It represents the culmination of his examination of methodological issues that arise in nineteenth-century physics. He focuses on the philosophical problem of how, if at all, is it possible to confirm scientific hypotheses that postulate `unobservables’ such as light waves, molecules, and electrons? This question is one that not only was of great interest to nineteenth-century physicists and methodologists, but continues to occupy philosophers of science up to the present day.
eBook
Doing Physics, Second Edition
Doing Physics makes concepts of physics easier to grasp by relating them to everyday knowledge. Addressing some of the models and metaphors that physicists use to explain the physical world, Martin H. Krieger describes the conceptual world of physics by means of analogies to economics, anthropology, theater, carpentry, mechanisms such as clockworks, and machine tool design. The interaction of elementary particles or chemical species, for example, can be related to the theory of kinship-who can marry whom is like what can interact with what. Likewise, the description of physical situations in terms of interdependent particles and fields is analogous to the design of a factory with its division of labor among specialists. For the new edition, Krieger has revised the text and added a chapter on the role of mathematics and formal models in physics. Doing Physics will be of special interest to economists, political theorists, anthropologists, and sociologists as well as philosophers of science.
eBook
Doing Physics
The author of Doing Mathematics explores the concepts of physics by demonstrating how physicists think and approach their work. Doing Physics makes concepts of physics easier to grasp by relating them to everyday knowledge. Addressing some of the models and metaphors that physicists use to explain the physical world, Martin H. Krieger describes the conceptual world of physics by means of analogies to economics, anthropology, theater, carpentry, mechanical systems, and machine tool design. Krieger explains the interaction of elementary particles by referring to the theory of kinship: who can marry whom is similar to what can interact with what. Likewise, the description of physical situations in terms of interdependent particles and fields is analogous to the design of a factory with its division of labor among specialists. For this new edition, Krieger has revised the text and added a chapter on the role of mathematics and formal models in physics. \"Krieger... excellently tells those in our human society outside the physics world how physicists think, plan, and go about understanding nature.\" — Choice
eBook
System SI/PI Modeling and Analysis
A physics-based circuit modeling methodology for 3D IC/packages is proposed here. The method is based on partial element equivalent circuit (PEEC) and layered Green’s function (LGF). The LGFs are calculated from discrete complex image method (DCIM) with three terms, direct coupling, complex images, and surface wave, extracted to analyze the wave behavior. The dominate terms for LGFs are analyzed for four stack-ups in 3D IC/packages. Analytical formulas that include the contribution of complex images are proposed for partial capacitance calculation, with the complex image extracted from LGFs. A chip PDN geometry is used to illustrate the use of LGF in PEEC to validate the proposed method. A good match is observed between the input impedance from the proposed method and full wave simulation. A physics-based circuit modeling methodology for system-level power integrity (PI) analysis and design is presented herein. The modeling methodology is based on representing the current paths in the power distribution network (PDN) with appropriate circuits based on cavity model and plane-pair Partial Element Equivalent Circuit (PEEC). The PDN input impedance looking from on-chip sources can be computed. A commercial simulation tool is used to corroborate the modeling approach where the system consists of a commercial IC, a complex organic package and a very high-layer-count printed circuit board. Two types of circuit models are proposed from the methodology with physical correspondence maintained in the circuit elements. The circuits can be used to analyze the geometry impact on the PDN impedance and explore design improvements. Voltage ripple simulations are conducted with the circuit models. The simulated results correlated with measurements.
Dissertation
GUP corrected Casimir wormholes in f(Q) gravity
We have systematically presented the effect of the generalized uncertainty principle (GUP) in Casimir wormhole space-time in the recently proposed modified gravity, the so-called symmetric teleparallel gravity, or
f
(
Q
) gravity. We consider two famous GUP models, such as the Kempf, Mangano, and Mann (KMM) model and the Detournay, Gabriel, and Spindel (DGS) model, in this study. Also, to find the solutions, we assumed two different
f
(
Q
) forms and obtained analytic as well as numerical solutions under the effect of GUP. Besides this, we investigate the solutions with three different redshift functions under an anisotropic fluid located at the throat. Further, we analyzed the obtained wormhole solutions with energy conditions, especially null energy conditions at the wormhole’s throat, and encountered that some arbitrary quantity disrespects the classical energy conditions at the wormhole throat of radius
r
0
. Later, the ADM mass and the volume integral quantifier are also discussed to calculate the amount of exotic matter required near the wormhole throat. Additionally, we show the behavior of the equation of state parameters under the effect of GUP.
Journal Article