1,835 research outputs found
Supercharge Operator of Hidden Symmetry in the Dirac Equation
As is known, the so-called Dirac -operator commutes with the Dirac
Hamiltonian for arbitrary central potential . Therefore the spectrum is
degenerate with respect to two signs of its eigenvalues. This degeneracy may be
described by some operator, which anticommutes with . If this operator
commutes with the Dirac Hamiltonian at the same time, then it establishes new
symmetry, which is Witten's supersymmetry. We construct the general
anticommuting with operator, which under the requirement of this symmetry
unambiguously select the Coulomb potential. In this particular case our
operator coincides with that, introduced by Johnson and Lippmann many years
ago.Comment: 3 page
Interview with Samantha Frost, âAttentive Bodyâ: Epigenetic Processes and the Self-formative Subjectivity
The interview is a follow up from Samantha Frostâs paper, âThe Attentive Body: How the Indexicality of Epigenetic Processes Enriches Our Understanding of Embodied Subjectivityâ in Body & Society 26(4): 3-34. Tomoko Tamari invites Frost to explore her interest in âbiocultural creatures,â which led a focus on âbodiesâ responsive self-transformationâ in epigenetic processes, and unfolds Peirceâs account of the index for understanding meaning-making in biological processes. Tamari also introduces Katherine Haylesâs notion of âcognitive nonconsciousâ to raise the question of the possible theoretical and mechanical similarities/discrepancies between epigenetic processes in organisms and the meaning-making process in computational systems. Drawing on Jacob von Uexkullâs notion of âumweltâ and introducing Yoshimi Kawadeâs remarks on a living beingâs subjective orientation in environments, a further question about âintentionâ and âsubjectivityâ enables Frost to unpack her notion of âthe attentive selfâ and discuss its relation to âintentionalityâ and âreferentialityâ in epigenetic processes. Finally, Samantha Frost remarks on current projects that seek to explore the connection between âattention-as-responsive-self-transformation and âmode-of-living-as-form-of-liveâ.
The biosemiotics view of the living body presented in your paper leads us to go beyond the mechanical view of organism functionality and formation process of subjectivity. This challenge asks us to combine biology and semiotics in order to explore the complex mechanism of meaning-making in organisms and to capture âthe attentive bodyâ and âembodied subjectivity.â You argue that the concept of the attentive body helps us make a bridge between the body as matter and mind/subjectivity which natural science usually excludes from its domain
Criminology as Epistemic Necropolitics
I argue in this essay that from 1492 to the present, the Global North has used theories of âcrime,â its causation and control, as part of a three-pronged epistemic necropolitical attack on the Global South. I suggest that the emergence of critical criminology and its more recent offshoots, given their dependence on the present or hypothetical war making and coercive state, are themselves a part of the problem. I suggest criminology is a Trojan Horse that brings epistemic toxic waste and destruction in the guise of deterministic theories on crime and its control. Like their Inquisitorial predecessors, I suggest criminology and criminologists are clerical dangers that ought to be avoided by the Global South. Alternatively, I point to scholars that have revolted against the criminological plantation to found sovereign epistemic worldviews and communities that resist the epistemic imperialism of the Global North
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