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127 results on '"Berghofer, Philipp"'

1. Motivating Gauge-Invariant Approaches to Particle Physics

Author

Berghofer, Philipp

Subjects
Physics - History and Philosophy of Physics, High Energy Physics - Phenomenology, High Energy Physics - Theory
Abstract

There is noticeable consensus among physicists and philosophers that only gauge-invariant quantities can be physically real. However, this insight that physical quantities must be gauge-invariant is not well-reflected in standard approaches to particle physics. For instance, each and every elementary field/particle of the Standard Model fails to be gauge-invariant! The main objective of this paper is to offer an accessible, concise, and convincing analysis of why philosophers and physicists should devote more of their energy to working on gauge-invariant approaches. Correspondingly, the thesis of this paper is that pursuing gauge-invariant approaches has several virtues. For instance, gauge-invariant reformulations allow us to make particle physics consistent with the mathematical framework in which it is formulated. This is illustrated by how mathematical theorems such as Elitzur's theorem, the Gribov ambiguity, and Haag's theorem pose problems for standard approaches but are avoided by gauge-invariant approaches.

Published
2024

2. Dressing vs. Fixing: On How to Extract and Interpret Gauge-Invariant Content

Author

Berghofer, Philipp and François, Jordan

Subjects
Physics - History and Philosophy of Physics, High Energy Physics - Phenomenology
Abstract

There is solid consensus among physicists and philosophers that, in gauge field theory, for a quantity to be physically meaningful or real, it must be gauge-invariant. Yet, every "elementary" field in the Standard Model of particle physics is actually gauge-variant. This has led a number of researchers to insist that new manifestly gauge-invariant approaches must be established. Indeed, in the foundational literature, dissatisfaction with standard methods for reducing gauge symmetries has been expressed: Spontaneous symmetry breaking is deemed conceptually dubious, while gauge fixing suffers the same limitations and is subject to the same criticisms as coordinate choices in General Relativity. An alternative gauge-invariant proposal was recently introduced in the literature, the so-called "dressing field method" (DFM). It is a mathematically subtle tool, and unfortunately prone to be confused with simple gauge transformations, hence with standard gauge~fixings. As a matter of fact, in the physics literature the two are often conflated, and in the philosophy community some doubts have been raised about whether there is any substantial difference between them. Clarifying this issue is of special significance for anyone interested in both the foundational issues of gauge theories and their invariant formulation. It is thus our objective to establish as precisely as possible the technical and conceptual distinctions between the DFM and gauge fixing.

Published
2024

6. Gauge Symmetries, Symmetry Breaking, and Gauge-Invariant Approaches

Author

Berghofer, Philipp, François, Jordan, Friederich, Simon, Gomes, Henrique, Hetzroni, Guy, Maas, Axel, and Sondenheimer, René

Subjects
Physics - History and Philosophy of Physics, High Energy Physics - Lattice, High Energy Physics - Phenomenology, High Energy Physics - Theory
Abstract

Gauge symmetries play a central role, both in the mathematical foundations as well as the conceptual construction of modern (particle) physics theories. However, it is yet unclear whether they form a necessary component of theories, or whether they can be eliminated. It is also unclear whether they are merely an auxiliary tool to simplify (and possibly localize) calculations or whether they contain independent information. Therefore their status, both in physics and philosophy of physics, remains to be fully clarified. In this overview we review the current state of affairs on both the philosophy and the physics side. In particular, we focus on the circumstances in which the restriction of gauge theories to gauge invariant information on an observable level is warranted, using the Brout-Englert-Higgs theory as an example of particular current importance. Finally, we determine a set of yet to be answered questions to clarify the status of gauge symmetries.

Published
2021

8. The Phenomenological Foundations of Mathematics: Introducing a Phenomenological Intuitionism

Author

Berghofer, Philipp, Bueno, Otávio, Editor-in-Chief, Brogaard, Berit, Editorial Board Member, Chakravartty, Anjan, Editorial Board Member, French, Steven, Editorial Board Member, Dutilh Novaes, Catarina, Editorial Board Member, Rowbottom, Darrell P., Editorial Board Member, Ruttkamp, Emma, Editorial Board Member, Miller, Kristie, Editorial Board Member, and Berghofer, Philipp

Published
2022
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9. Phenomenological Approaches to Physics

Author

Berghofer, Philipp, Bueno, Otávio, Editor-in-Chief, Brogaard, Berit, Editorial Board Member, Chakravartty, Anjan, Editorial Board Member, French, Steven, Editorial Board Member, Dutilh Novaes, Catarina, Editorial Board Member, Rowbottom, Darrell P., Editorial Board Member, Ruttkamp, Emma, Editorial Board Member, Miller, Kristie, Editorial Board Member, and Berghofer, Philipp

Published
2022
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10. Husserl’s Conception of Experiential Justification: What It Is and Why It Matters

Author

Berghofer, Philipp, Bueno, Otávio, Editor-in-Chief, Brogaard, Berit, Editorial Board Member, Chakravartty, Anjan, Editorial Board Member, French, Steven, Editorial Board Member, Dutilh Novaes, Catarina, Editorial Board Member, Rowbottom, Darrell P., Editorial Board Member, Ruttkamp, Emma, Editorial Board Member, Miller, Kristie, Editorial Board Member, and Berghofer, Philipp

Published
2022
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11. Motivating PCEJ

Author

Berghofer, Philipp, Bueno, Otávio, Editor-in-Chief, Brogaard, Berit, Editorial Board Member, Chakravartty, Anjan, Editorial Board Member, French, Steven, Editorial Board Member, Dutilh Novaes, Catarina, Editorial Board Member, Rowbottom, Darrell P., Editorial Board Member, Ruttkamp, Emma, Editorial Board Member, Miller, Kristie, Editorial Board Member, and Berghofer, Philipp

Published
2022
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12. Sources of Knowledge: The Correlational Apriori

Author

Berghofer, Philipp, Bueno, Otávio, Editor-in-Chief, Brogaard, Berit, Editorial Board Member, Chakravartty, Anjan, Editorial Board Member, French, Steven, Editorial Board Member, Dutilh Novaes, Catarina, Editorial Board Member, Rowbottom, Darrell P., Editorial Board Member, Ruttkamp, Emma, Editorial Board Member, Miller, Kristie, Editorial Board Member, and Berghofer, Philipp

Published
2022
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13. Transcendental Phenomenology as the Project of Ultimate Elucidation

Author

Berghofer, Philipp, Bueno, Otávio, Editor-in-Chief, Brogaard, Berit, Editorial Board Member, Chakravartty, Anjan, Editorial Board Member, French, Steven, Editorial Board Member, Dutilh Novaes, Catarina, Editorial Board Member, Rowbottom, Darrell P., Editorial Board Member, Ruttkamp, Emma, Editorial Board Member, Miller, Kristie, Editorial Board Member, and Berghofer, Philipp

Published
2022
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14. Transcendental Phenomenology as an Epistemological Project

Author

Berghofer, Philipp, Bueno, Otávio, Editor-in-Chief, Brogaard, Berit, Editorial Board Member, Chakravartty, Anjan, Editorial Board Member, French, Steven, Editorial Board Member, Dutilh Novaes, Catarina, Editorial Board Member, Rowbottom, Darrell P., Editorial Board Member, Ruttkamp, Emma, Editorial Board Member, Miller, Kristie, Editorial Board Member, and Berghofer, Philipp

Published
2022
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15. New Ways to Transcendental Phenomenology

Author

Berghofer, Philipp, Bueno, Otávio, Editor-in-Chief, Brogaard, Berit, Editorial Board Member, Chakravartty, Anjan, Editorial Board Member, French, Steven, Editorial Board Member, Dutilh Novaes, Catarina, Editorial Board Member, Rowbottom, Darrell P., Editorial Board Member, Ruttkamp, Emma, Editorial Board Member, Miller, Kristie, Editorial Board Member, and Berghofer, Philipp

Published
2022
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16. Husserl’s Universal Empiricism as a Moderate Rationalism

Author

Berghofer, Philipp, Bueno, Otávio, Editor-in-Chief, Brogaard, Berit, Editorial Board Member, Chakravartty, Anjan, Editorial Board Member, French, Steven, Editorial Board Member, Dutilh Novaes, Catarina, Editorial Board Member, Rowbottom, Darrell P., Editorial Board Member, Ruttkamp, Emma, Editorial Board Member, Miller, Kristie, Editorial Board Member, and Berghofer, Philipp

Published
2022
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17. Husserl’s Phenomenological Intuitionism

Author

Berghofer, Philipp, Bueno, Otávio, Editor-in-Chief, Brogaard, Berit, Editorial Board Member, Chakravartty, Anjan, Editorial Board Member, French, Steven, Editorial Board Member, Dutilh Novaes, Catarina, Editorial Board Member, Rowbottom, Darrell P., Editorial Board Member, Ruttkamp, Emma, Editorial Board Member, Miller, Kristie, Editorial Board Member, and Berghofer, Philipp

Published
2022
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18. Perceptual Justification

Author

Berghofer, Philipp, Bueno, Otávio, Editor-in-Chief, Brogaard, Berit, Editorial Board Member, Chakravartty, Anjan, Editorial Board Member, French, Steven, Editorial Board Member, Dutilh Novaes, Catarina, Editorial Board Member, Rowbottom, Darrell P., Editorial Board Member, Ruttkamp, Emma, Editorial Board Member, Miller, Kristie, Editorial Board Member, and Berghofer, Philipp

Published
2022
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19. Husserl as a Moderate Foundationalist

Author

Berghofer, Philipp, Bueno, Otávio, Editor-in-Chief, Brogaard, Berit, Editorial Board Member, Chakravartty, Anjan, Editorial Board Member, French, Steven, Editorial Board Member, Dutilh Novaes, Catarina, Editorial Board Member, Rowbottom, Darrell P., Editorial Board Member, Ruttkamp, Emma, Editorial Board Member, Miller, Kristie, Editorial Board Member, and Berghofer, Philipp

Published
2022
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20. The Nature and Systematic Role of Evidence: Husserl as a Proponent of Mentalist Evidentialism

Author

Berghofer, Philipp, Bueno, Otávio, Editor-in-Chief, Brogaard, Berit, Editorial Board Member, Chakravartty, Anjan, Editorial Board Member, French, Steven, Editorial Board Member, Dutilh Novaes, Catarina, Editorial Board Member, Rowbottom, Darrell P., Editorial Board Member, Ruttkamp, Emma, Editorial Board Member, Miller, Kristie, Editorial Board Member, and Berghofer, Philipp

Published
2022
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21. How to Supplement Mentalist Evidentialism: Phenomenological Principles Are the Fundamental Epistemological Principles!

Author

Berghofer, Philipp, Bueno, Otávio, Editor-in-Chief, Brogaard, Berit, Editorial Board Member, Chakravartty, Anjan, Editorial Board Member, French, Steven, Editorial Board Member, Dutilh Novaes, Catarina, Editorial Board Member, Rowbottom, Darrell P., Editorial Board Member, Ruttkamp, Emma, Editorial Board Member, Miller, Kristie, Editorial Board Member, and Berghofer, Philipp

Published
2022
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22. Intuitional Justification

Author

Berghofer, Philipp, Bueno, Otávio, Editor-in-Chief, Brogaard, Berit, Editorial Board Member, Chakravartty, Anjan, Editorial Board Member, French, Steven, Editorial Board Member, Dutilh Novaes, Catarina, Editorial Board Member, Rowbottom, Darrell P., Editorial Board Member, Ruttkamp, Emma, Editorial Board Member, Miller, Kristie, Editorial Board Member, and Berghofer, Philipp

Published
2022
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23. Phenomenological Approaches to Physics: Mapping the Field

Author

Berghofer, Philipp, Wiltsche, Harald A., Bueno, Otávio, Editor-in-Chief, Brogaard, Berit, Editorial Board Member, Chakravartty, Anjan, Editorial Board Member, French, Steven, Editorial Board Member, Dutilh Novaes, Catarina, Editorial Board Member, Rowbottom, Darrell P., Editorial Board Member, Ruttkamp, Emma, Editorial Board Member, Miller, Kristie, Editorial Board Member, Wiltsche, Harald A., editor, and Berghofer, Philipp, editor

Published
2020
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29. Gettier and the a priori.

Author

Berghofer, Philipp

Subjects
*FALSE claims, *INTUITION, *A priori, *INTERNALISM (Theory of knowledge)
Abstract

In 1967, Alvin Goldman prominently claimed that the traditional JTB analysis is adequate for non‐empirical knowledge. Since then, this claim has remained widely unchallenged. In this paper, I show that this claim is false. I provide two examples in which a true belief is a priori justified but epistemically defective such that it does not constitute knowledge. Finally, I submit a novel analysis of a priori knowledge that avoids the Gettier problem. What is particularly important and distinctive about my analysis is that I neither need to make the justification condition so strong that only infallible justification is allowed, nor do I need to explicitly introduce a truth condition. [ABSTRACT FROM AUTHOR]

Published
2024
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30. Phänomenologie

Author

Berghofer, Philipp, Wiltsche, Harald A., Grajner, Martin, editor, and Melchior, Guido, editor

Published
2019
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44. Motivating and defending the phenomenological conception of perceptual justification.

Author

Berghofer, Philipp

Subjects
*MOTIVATION (Psychology), *PHENOMENOLOGY, *LAPTOP computers, *DESKS
Abstract

Perceptual experiences justify. When I look at the black laptop in front of me and my perceptual experience presents me with a black laptop placed on my desk, my perceptual experience has justificatory force with respect to the proposition that there is black laptop on the desk. The present paper addresses the question of why perceptual experiences are a source of immediate justification: What gives them their justificatory force? I shall argue that the most plausible and the most straightforward answer to this question consists in what I call the phenomenological conception of perceptual justification. Perceptual experiences justify by virtue of their distinctive presentive phenomenology. This is a truly internalist conception that enjoys significant advantages over rival conceptions. In the course of his paper, I demonstrate the advantages of the phenomenological conception and defend it against a recent objection. [ABSTRACT FROM AUTHOR]

Published
2023
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47. Perspectivism in science: metaphysical and epistemological reflections

Author

Massimi, Michela, Baker, Kane, Berghofer, Philipp, Boon, Mieke, Browning, Heather, Bschir, Karim, Dewhurst, Joe, Evans, Peter, Fellowes, Sam, Hoefer, Carl, Howland, Hannah, Keyser, Vadim, Lee, Jonny, Martí, Genoveva, Potters, Jan, Ruyant, Quentin, Sanjuán, Mariano, and Veit, Walter

Subjects
philosophy of science, perspectivism
Abstract

This topical collection in the European Journal for Philosophy of Science explores a variety of metaphysical and epistemological issues arising from perspectivism in science, in order to offer a better understanding of perspectivism and its relevance to science. Guest editor: Prof. Michela Massimi, FRSE (University of Edinburgh). &nbsp

Published
2021
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48. Perspectivism in science: metaphysical and epistemological reflections

Author

Massimi, Michela, Berghofer, Philipp, Boon, Mieke, Potters, Jan, Evans, Peter, Ruyant, Quentin, and Baker, Kane

Subjects
philosophy of science, perspectivism
Abstract

This topical collection in the European Journal for Philosophy of Science explores a variety of metaphysical and epistemological issues arising from perspectivism in science, in order to offer a better understanding of perspectivism and its relevance to science. Guest editor: Prof. Michela Massimi, FRSE (University of Edinburgh). &nbsp

Published
2020
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