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Question 1

0votes

1answer

92views

Principle of relativity near a charged earth

If earth was electrically charged is it was possible for a person in a train to know that if it is standing still or it is moving by constant velocity?

moshtaba

1,685

askedNov 4 at 17:57

Question 2

5votes

0answers

94views

Guidance equation from Galilean invariance

Within a Bohmian mechanics framework, can we rigorously derive the guidance equation from Galilean invariance?This means showing that Galilean invariance, with minimal and widely accepted assumptions ...

BrightNeutrino

89

askedOct 9 at 11:43

Question 3

4votes

7answers

543views

Isn't the common formulation of Galilean Relativity tautological?

I understand that there are multiple variants and formulations of the relativity principle, and I do not even refer to Galileo's original formulation in terms of the inability to discern constant ...

arminrph

355

askedAug 14 at 23:19

Question 4

11votes

2answers

914views

Why is time reversal not a natural part of the Galilean group?

Let me begin by explaining what I mean by "natural". Consider the Poincare group in $4$ spacetime dimensions, $$\mathbb{R}^{3, 1} \rtimes O (3, 1).$$ The Lorentz group $O (3, 1)$ within it ...

Ishan Deo

2,615

askedJul 25 at 17:39

Question 5

5votes

5answers

1kviews

What is the difference between Newton's First Law and Galileo's Law of Inertia?

Both Galileo’s law of inertia and Newton’s first law of motion talk about how an object keeps moving unless something stops it. But are they really the same, or is there a deeper difference?From what ...

Adrija Kar

47

askedJul 12 at 18:14

Question 6

1vote

2answers

150views

Frame dependence and independence

How do I decide if a quantity in physics is frame dependent or not. Like my teacher told me force is frame independent. But while solving some problems, it feels like friction maybe frame dependent ...

Inter-Loop

11

askedJul 6 at 23:19

Question 7

1vote

0answers

99views

Analogue of Haag-Kastler axioms for non-relativistic quantum field theory

Is there an analogue to the Haag-Kastler axioms for non-relativistic quantum field theory (that is, a quantum field theory whose spacetime symmetry group is the Galilean group instead of the Poincare ...

Ishan Deo

2,615

askedJul 4 at 18:43

Question 8

0votes

1answer

104views

I tried to derive an expression for relative velocity in two dimensions but I get the same exact expression even if reference frame is reversed [closed]

I first considered two vectors $\vec{U}$ and $\vec{V}$ with respective sine components $U\sin \theta$, $V\sin \alpha$ and cosine components $U\cos \theta$, $V\cos \alpha$. The initial objective is to ...

DannyPereira

35

askedJul 3 at 18:30

Question 9

4votes

0answers

95views

Analogue of Wightman axioms for non-relativistic quantum field theory

Is there an analogue to the Wightman axioms for non-relativistic quantum field theory (that is, a quantum field theory whose spacetime symmetry group is the Galilean group instead of the Poincare ...

Ishan Deo

2,615

askedJul 3 at 15:23

Question 10

5votes

0answers

136views

Valid approximations for Green's function in a moving coordinate system

I am reading Victor Popov's book "Functional Integrals and Collective Excitations", and he derives the (normal) Green's function of a superfluid (Equation 6.18),$$G(p) = \frac{i\omega + k^...

Archisman Panigrahi

3,360

askedJun 20 at 3:52

Question 11

1vote

1answer

148views

Galilean Transforms on Lagrangian of a Free Particle [duplicate]

In writing the Lagrangian of for free motion of a particle in an inertial frame, a key assumption is that the equation of motion must have the same form in every inertial frame. For velocities $\...

ananta

240

askedMay 26 at 13:42

Question 12

0votes

1answer

369views

Does relativity=invariance? [closed]

The relativity principle was first stated by Galileo as follows: Shut yourself up with some friend in the main cabin below decks on some large ship, and have with you there some flies, butterflies, ...

asim dahal

107

askedMay 19 at 6:44

Question 13

3votes

0answers

126views

Explicit construction of Galilean-invariant space

I'm trying to explicitly find a projective unitary scalar representation of the Galilean group. I'll denote a generic element of the group by $(a, {\bf b},R, {\bf v})$, corresponding respectively to ...

Adgorn

327

askedMay 12 at 20:37

Question 14

-1votes

4answers

194views

Does the speed of two electrical bicycles with different kinetic energies increase by the same amount if they are supplied the same energy? [closed]

Let us suppose we have two identical electrical bicycles A and B with identical batteries, both with some stored electrical energy $E$.A is in motion with Kinetic energy $K_A$. It gets $E$ from its ...

Anarchasis

1,407

askedMay 1 at 14:14

Question 15

1vote

0answers

152views

Do quantum fields need to be operator-valued distributions in non-relativistic quantum field theory?

In relativistic quantum field theory, there is a result saying that ifan operator-valued map $\Phi (x)$ satisfying Poincare covariance is a well-defined operator at any point $x \in \mathbb{R}^4$, ...

Ishan Deo

2,615

askedApr 17 at 19:59

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Stack Exchange Network

Questions tagged [galilean-relativity]

Principle of relativity near a charged earth

Guidance equation from Galilean invariance

Isn't the common formulation of Galilean Relativity tautological?

Why is time reversal not a natural part of the Galilean group?

What is the difference between Newton's First Law and Galileo's Law of Inertia?

Frame dependence and independence

Analogue of Haag-Kastler axioms for non-relativistic quantum field theory

I tried to derive an expression for relative velocity in two dimensions but I get the same exact expression even if reference frame is reversed [closed]

Analogue of Wightman axioms for non-relativistic quantum field theory

Valid approximations for Green's function in a moving coordinate system

Galilean Transforms on Lagrangian of a Free Particle [duplicate]

Does relativity=invariance? [closed]

Explicit construction of Galilean-invariant space

Does the speed of two electrical bicycles with different kinetic energies increase by the same amount if they are supplied the same energy? [closed]

Do quantum fields need to be operator-valued distributions in non-relativistic quantum field theory?

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