搜索结果: 1-15 共查到“科学技术哲学 symmetry”相关记录30条 . 查询时间(0.138 秒)
We state the defining characteristic of mathematics as a type of symmetry where one can change the connotation of a mathematical statement in a certain way when the statement's truth value remains the...
Spontaneous Symmetry Breaking in Quantum Systems:Emergence or Reduction?
Emergence More is Different Symmetry Breaking Earman's Principle
2016/6/14
Beginning with Anderson (1972), spontaneous symmetry breaking (SSB) in infinite quantum systems is often put forward as an example of (asymptotic) emergence in physics, since in theory no finite syste...
Dynamics,Symmetry,and the Levels of Selection
levels of selection natural selection group selection evolutionary process dynamics symmetry symmetry transformation
2016/6/13
Most attempts to answer the question of whether populations of groups can undergo natural selection focus on properties of the groups themselves rather than the dynamics of the population. Those appro...
A Relic of a Bygone Age?Causation,Time Symmetry and the Directionality Argument
Causation direction of time time asymmetry time symmetry time reversal
2016/6/13
Bertrand Russell famously argued that causation is not part of the fundamental physical description of the world, describing the notion of cause as "a relic of a bygone age." This paper assesses one o...
Symmetry,empirical equivalence,and identity
symmetries empirical equivalence identity of physical states redundancy
2016/6/13
The paper proposes a novel approach to the much discussed question of which symmetries have direct empirical significance and which do not. The approach is based on a development of a recently propose...
Philosophical Aspects of Spontaneous Symmetry Breaking
Spontaneous symmetry breaking c-star algebras GNS theorem infinite spin chain algebraic quantum field theory heuristic quantum field theory
2016/5/31
This essay expounds the algebraic framework describing general physical theories, within which the phenomenon of spontaneous symmetry breaking (SSB) makes its appearance in infinite quantum systems. T...
Emergence, Singularities, and Symmetry Breaking
Emergence Symmetry Breaking Renormalization Group Condensed Matter Explanation
2009/11/18
This paper looks at emergence in physical theories and argues that an appropriate way to understand so-called ``emergent protectorates'' is via the explanatory apparatus of the renormalization group. ...
Conventional and Objective Invariance: Debs and Redhead on Symmetry
Objectivity invariance conventions symmetry
2009/7/16
This review is a critical discussion of three main claims in Debs and Redhead’s thought-provoking book Objectivity, Invariance, and Convention. These claims are: (i) Social acts impinge upon formal as...
QFT, Antimatter, and Symmetry
QFT Antimatter Symmetry
2009/4/24
A systematic analysis is made of the relations between the symmetries of a classical field and the symmetries of the one-particle quantum system that results from quantizing that field in regimes wher...
Time Symmetry and the Many-Worlds Interpretation
Many-Worlds Interpretation quantum mechanics probability time symmetry
2009/4/22
An attempt to solve the collapse problem in the framework of a time-symmetric quantum formalism is reviewed. Although the proposal does not look very attractive, its concept - a world defined by two q...
Coordinates, observables and symmetry in relativity
Spacetime events general covariance observables
2008/4/22
We investigate the interplay and connections between symmetry properties of equations, the interpretation of coordinates, the construction of observables, and the existence of physical relativity prin...
Laws, Symmetry, and Symmetry Breaking; Invariance, Conservation Principles, and Objectivity
symmetry invariance symmetry breaking
2008/4/22
Given its importance in modern physics, philosophers of science have paid surprisingly little attention to the subject of symmetries and invariances, and they have largely neglected the subtopic of sy...
On Symmetry and Conserved Quantities in Classical Mechanics
classical mechanics symmetry conserved quantities
2008/4/22
This paper expounds the relations between continuous symmetries and conserved quantities, i.e. Noether's ``first theorem'', in both the Lagrangian and Hamiltonian frameworks for classical mechanics. T...
Probability and time symmetry in classical Markov processes
probability time symmetry Markov processes arrow of time
2008/4/22
Definitions of time symmetry and examples of time-directed behaviour are discussed in the framework of discrete Markov processes. It is argued that typical examples of time-directed behaviour can be d...
Spontaneous Symmetry Breaking (II): Variations in Complex Models
symmetry spontaneous breaking of symmetry
2008/4/21
This paper, part II of a two-part project, continues to explore the meaning of spontaneous symmetry breaking (SSB) by applying and expanding the general notion we obtained in part I to some more compl...