George Shiber
/ | Philosophy | Mathematics | String/M-theory | All our scientific and philosophic ideals are altars to unknown gods ― William James
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Isaac Newton in London | Science Museum
Science Museum 5h 1 tweets
Isaac Newton is best known for his theory of gravity and laws of motion, work he did while he was an academic professor in Cambridge. But he had a second life – as a public figure in London.
Recognizing Wrongs // Notre Dame Philosophical Reviews // University of Notre Dame
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Notre Dame Philosophical Reviews is an electronic, peer-reviewed journal that publishes timely reviews of scholarly philosophy books.
George Shiber Philosophy book-reviews: —Recognizing Wrongs —Physicalism Deconstructed: Levels of Reality and the Mind–Body Problem —Power and Influence: The Metaphysics of Reductive Explanation 3d
Physicalism Deconstructed: Levels of Reality and the Mind–Body Problem // Notre Dame Philosophical Reviews // University of Notre Dame
ND's Web Team - Notre Dame Philosophical Reviews 5d 3 tweets
Notre Dame Philosophical Reviews is an electronic, peer-reviewed journal that publishes timely reviews of scholarly philosophy books.
George Shiber Philosophy book-reviews: —Recognizing Wrongs —Physicalism Deconstructed: Levels of Reality and the Mind–Body Problem —Power and Influence: The Metaphysics of Reductive Explanation 3d
Power and Influence: The Metaphysics of Reductive Explanation // Notre Dame Philosophical Reviews // University of Notre Dame
ND's Web Team - Notre Dame Philosophical Reviews 3d 1 tweets
Notre Dame Philosophical Reviews is an electronic, peer-reviewed journal that publishes timely reviews of scholarly philosophy books.
George Shiber Philosophy book-reviews: —Recognizing Wrongs —Physicalism Deconstructed: Levels of Reality and the Mind–Body Problem —Power and Influence: The Metaphysics of Reductive Explanation 3d
Minimal geometric deformation of Yang-Mills-Dirac stellar configurations
Physical Review D 3d 1 tweets
The method of minimal geometric deformation (MGD) is used to derive static, strongly gravitating, spherically symmetric, compact stellar distributions that are solutions of the Yang-Mills-Einstein-Dirac coupled field equations on fluid membranes...
George Shiber Minimal geometric deformation of Yang-Mills-Dirac stellar configurations “derived as solutions of a Yang-Mills-Einstein-Dirac coupled system of field equations on a fluid brane” Brane mechanism of spontaneously generated gravity 3d
Brane mechanism of spontaneously generated gravity
arXiv.org 3d 1 tweets
The braneworld scenario is studied and the effective action of 3-brane living in 5-dim. Minkowski space is constructed. This action is proved to be invariant under spontaneously broken scale and Weyl symmetries and to encode a model of quadratic...
George Shiber Minimal geometric deformation of Yang-Mills-Dirac stellar configurations “derived as solutions of a Yang-Mills-Einstein-Dirac coupled system of field equations on a fluid brane” Brane mechanism of spontaneously generated gravity 3d
Calabi-Yau Spaces in the String Landscape
arXiv.org 4d 1 tweets
Calabi-Yau spaces, or Kahler spaces admitting zero Ricci curvature, have played a pivotal role in theoretical physics and pure mathematics for the last half-century. In physics, they constituted the first and natural solution to compactification of...
George Shiber Calabi-Yau Spaces in the String Landscape Linking the Supersymmetric Standard Model to the Cosmological Constant Taming Defects in N=4 Super-Yang-Mills (Strings 2020) 4d
Linking the Supersymmetric Standard Model to the Cosmological Constant
arXiv.org 4d 1 tweets
String theory has no parameter except the string scale $M_S$, so the Planck scale $M_\text{Pl}$, the supersymmetry-breaking scale, the EW scale $m_\text{EW}$ as well as the vacuum energy density (cosmological constant) $Λ$ are to be determined...
George Shiber Calabi-Yau Spaces in the String Landscape Linking the Supersymmetric Standard Model to the Cosmological Constant Taming Defects in N=4 Super-Yang-Mills (Strings 2020) 4d
Reading to explore the resonance of Douglass’ famous speech
Harvard Gazette 4d 1 tweets
A 4th of July community reading to explore the resonance of Frederick Douglass’ famous speech, reflect on the past, and what comes next.
George Shiber “Whether we turn to the declarations of the past or to the professions of the present, the conduct of the nation seems equally hideous and revolting. America is false to the past, false to the present and solemnly binds herself to be false to the future.” 4d
Swampland Conjectures for Strings and Membranes
arXiv.org 5d 1 tweets
Swampland criteria like the Weak Gravity Conjecture should not only apply to particles, but also to other lower-codimension charged objects in 4d EFTs like strings and membranes. However, the description of the latter is in general subtle due to...
George Shiber Swampland Conjectures for Strings and Membranes Improved (g−2)μ Measurements and Supersymmetry String Lamppost and the Swampland 5d
Improved $(g-2)_μ$ Measurements and Supersymmetry
arXiv.org 5d 1 tweets
The electroweak (EW) sector of the Minimal Supersymmetric Standard Model (MSSM) can account for a variety of experimental data. The lighest supersymmetric particle (LSP), which we take as the lightest neutralino, $\tilde χ_1^0$, can account for the...
George Shiber Swampland Conjectures for Strings and Membranes Improved (g−2)μ Measurements and Supersymmetry String Lamppost and the Swampland 5d
Free Will and Epistemology: A Defence of the Transcendental Argument for Freedom // Notre Dame Philosophical Reviews // University of Notre Dame
ND's Web Team - Notre Dame Philosophical Reviews 5d 1 tweets
Notre Dame Philosophical Reviews is an electronic, peer-reviewed journal that publishes timely reviews of scholarly philosophy books.
George Shiber Book-reviews: Free Will and Epistemology: A Defence of the Transcendental Argument for Freedom Legitimacy: The Right to Rule in a Wanton World Morality and Epistemic Judgement: The Argument From Analogy 5d
Legitimacy: The Right to Rule in a Wanton World // Notre Dame Philosophical Reviews // University of Notre Dame
ND's Web Team - Notre Dame Philosophical Reviews 5d 1 tweets
Notre Dame Philosophical Reviews is an electronic, peer-reviewed journal that publishes timely reviews of scholarly philosophy books.
George Shiber Book-reviews: Free Will and Epistemology: A Defence of the Transcendental Argument for Freedom Legitimacy: The Right to Rule in a Wanton World Morality and Epistemic Judgement: The Argument From Analogy 5d
Morality and Epistemic Judgement: The Argument From Analogy // Notre Dame Philosophical Reviews // University of Notre Dame
ND's Web Team - Notre Dame Philosophical Reviews 5d 2 tweets
Notre Dame Philosophical Reviews is an electronic, peer-reviewed journal that publishes timely reviews of scholarly philosophy books.
George Shiber Book-reviews: Free Will and Epistemology: A Defence of the Transcendental Argument for Freedom Legitimacy: The Right to Rule in a Wanton World Morality and Epistemic Judgement: The Argument From Analogy 5d
The constraining power of Coulomb Branch Geometry: lectures on Seiberg-Witten theory
arXiv.org 6d 1 tweets
The constraining mathematical structure of the Coulomb branch of four dimensional $\mathcal{N}=2$ supersymmetric theories is discussed. The presentation follows a somewhat different route from other excellent reviews on the subject and it is geared...
George Shiber The constraining power of Coulomb Branch Geometry: lectures on Seiberg-Witten theory Making String Theory empirical: defending unitary incompatibility between effective theories 6d
Making string theory empirical: defending unitary incompatibility between effective theories - PhilSci-Archive
Philsci-archive.pitt.edu 6d 1 tweets
George Shiber The constraining power of Coulomb Branch Geometry: lectures on Seiberg-Witten theory Making String Theory empirical: defending unitary incompatibility between effective theories 6d
War by Agreement: A Contractarian Ethics of War // Notre Dame Philosophical Reviews // University of Notre Dame
ND's Web Team - Notre Dame Philosophical Reviews 6d 1 tweets
Notre Dame Philosophical Reviews is an electronic, peer-reviewed journal that publishes timely reviews of scholarly philosophy books.
George Shiber Philosophy book-review: War by Agreement: A Contractarian Ethics of War 6d
Volume 15: The Berlin Years: Writings & Correspondence, June 1925-May 1927 page 779
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Why is Quantum Gravity Key?
Closertotruth.com 10d 1 tweets
Quantum theory explains the microworld. General relativity, discovered by Einstein, explains gravity and the structure of the universe. The problem is that the two are not friends; they do not get along, they are not compatible. But they must....
George Shiber Why is Quantum Gravity Key? Why is Quantum Gravity So Significant? Why the ‘Unreasonable Effectiveness’ of Mathematics? (Part 3) What are Breakthroughs in Mathematics? (Part 2) 10d
Why is Quantum Gravity So Significant?
Closertotruth.com 10d 1 tweets
Quantum theory explains how particles and fields work. General relativity, discovered by Einstein, explains how gravity generates the structure of the universe. But the two great theories of physics and cosmology are not compatible. But this is...
George Shiber Why is Quantum Gravity Key? Why is Quantum Gravity So Significant? Why the ‘Unreasonable Effectiveness’ of Mathematics? (Part 3) What are Breakthroughs in Mathematics? (Part 2) 10d