Dennis Lehmkuhl
Biographic Data
| ID | 1680966 |
|---|---|
| NAME | Dennis Lehmkuhl |
| GIVEN NAMES | Dennis |
| FAMILY NAME | Lehmkuhl |
| SIGNATURE | LEHMKUHL D |
| AFFILIATIONS | California Institute of Technology |
| VERIFIED | No |
| TOTAL WORKS | 9 |
| TOTAL CITATIONS | 17 |
| WORKS AS AUTHOR | 9 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 2011 |
| LATEST PUBLICATION YEAR | 2022 |
| H-INDEX | 2 |
Integrating dark matter, modified gravity, and the humanities
Cartography of the space of theories
This paper pushes back against the Democritean-Newtonian tradition of assuming a strict conceptual dichotomy between spacetime and matter. Our approach proceeds via the more narrow distinction between modified gravity/spacetime (MG) and dark matter (DM). A prequel paper argued that the novel field Φ postulated by Berezhiani and Khoury’s ‘superfluid dark matter theory’ is as much (dark) matter as anything could possibly be, but also—below the crit…
Dark matter = modified gravity? Scrutinising the spacetime–matter distinction through the modified gravity/ dark matter lens
This paper scrutinises the tenability of a strict conceptual distinction between space(time) and matter via the lens of the debate between modified gravity and dark matter. In particular, we consider Berezhiani and Khoury's novel ‘superfluid dark matter theory’ (SFDM) as a case study. Two families of criteria for being matter and being spacetime, respectively, are extracted from the literature. Evaluation of the new scalar field postulated by SFD…
General relativity as a hybrid theory
Two miracles of general relativity
Literal versus Careful Interpretations of Scientific Theories
The problem of motion in general relativity is about how exactly the gravitational field equations, the Einstein equations, are related to the equations of motion of material bodies subject to gravitational fields. This article compares two approaches to derive the geodesic motion of (test) matter from the field equations: the ‘T approach’ and the ‘vacuum approach’. The latter approach has been dismissed by philosophers of physics because it appa…
Particle physics after the Higgs discovery
Why Einstein did not believe that general relativity geometrizes gravity
I argue that, contrary to folklore, Einstein never really cared for geometrizing the gravitational or (subsequently) the electromagnetic field; indeed, he thought that the very statement that General Relativity geometrizes gravity “is not saying anything at all”. Instead, I shall show that Einstein saw the “unification” of inertia and gravity as one of the major achievements of General Relativity. Interestingly, Einstein did not locate this unifi…
Mass–Energy–Momentum
I describe how relativistic field theory generalizes the paradigm property of material systems, the possession of mass, to the requirement that they have a mass–energy–momentum density tensor Tμν associated with them. I argue that Tμν does not represent an intrinsic property of matter. For it will become evident that the definition of Tμν depends on the metric field gμν in a variety of ways. Accordingly, since gμν represents the geometry of space…
Mass–Energy–Momentum
I describe how relativistic field theory generalizes the paradigm property of material systems, the possession of mass, to the requirement that they have a mass–energy–momentum density tensor Tμν associated with them. I argue that Tμν does not represent an intrinsic property of matter. For it will become evident that the definition of Tμν depends on the metric field gμν in a variety of ways. Accordingly, since gμν represents the geometry of space…
Literal versus Careful Interpretations of Scientific Theories
The problem of motion in general relativity is about how exactly the gravitational field equations, the Einstein equations, are related to the equations of motion of material bodies subject to gravitational fields. This article compares two approaches to derive the geodesic motion of (test) matter from the field equations: the ‘T approach’ and the ‘vacuum approach’. The latter approach has been dismissed by philosophers of physics because it appa…
Integrating dark matter, modified gravity, and the humanities
Mass–Energy–Momentum
I describe how relativistic field theory generalizes the paradigm property of material systems, the possession of mass, to the requirement that they have a mass–energy–momentum density tensor Tμν associated with them. I argue that Tμν does not represent an intrinsic property of matter. For it will become evident that the definition of Tμν depends on the metric field gμν in a variety of ways. Accordingly, since gμν represents the geometry of space…
Why Einstein did not believe that general relativity geometrizes gravity
I argue that, contrary to folklore, Einstein never really cared for geometrizing the gravitational or (subsequently) the electromagnetic field; indeed, he thought that the very statement that General Relativity geometrizes gravity “is not saying anything at all”. Instead, I shall show that Einstein saw the “unification” of inertia and gravity as one of the major achievements of General Relativity. Interestingly, Einstein did not locate this unifi…
Particle physics after the Higgs discovery
Literal versus Careful Interpretations of Scientific Theories
The problem of motion in general relativity is about how exactly the gravitational field equations, the Einstein equations, are related to the equations of motion of material bodies subject to gravitational fields. This article compares two approaches to derive the geodesic motion of (test) matter from the field equations: the ‘T approach’ and the ‘vacuum approach’. The latter approach has been dismissed by philosophers of physics because it appa…
Two miracles of general relativity
General relativity as a hybrid theory
Cartography of the space of theories
This paper pushes back against the Democritean-Newtonian tradition of assuming a strict conceptual dichotomy between spacetime and matter. Our approach proceeds via the more narrow distinction between modified gravity/spacetime (MG) and dark matter (DM). A prequel paper argued that the novel field Φ postulated by Berezhiani and Khoury’s ‘superfluid dark matter theory’ is as much (dark) matter as anything could possibly be, but also—below the crit…
Dark matter = modified gravity? Scrutinising the spacetime–matter distinction through the modified gravity/ dark matter lens
This paper scrutinises the tenability of a strict conceptual distinction between space(time) and matter via the lens of the debate between modified gravity and dark matter. In particular, we consider Berezhiani and Khoury's novel ‘superfluid dark matter theory’ (SFDM) as a case study. Two families of criteria for being matter and being spacetime, respectively, are extracted from the literature. Evaluation of the new scalar field postulated by SFD…
Integrating dark matter, modified gravity, and the humanities
Physics (9 works) · Relativity and Gravitational Theory (8 works) · Theoretical physics (8 works) · Cosmology and Gravitation Theories (7 works) · Classical mechanics (5 works) · General relativity (5 works) · Philosophy (5 works) · Theory of relativity (5 works) · Einstein (4 works) · Epistemology (4 works)