The phase-transition tag has no wiki summary.
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Solidification by the application of heat
When you add heat to a liquid (or a fluid), can it be solidified? If not, why in the world does an egg's stuffs become solid (or at least no more a liquid) when you 'boil' it in water?
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33 views
What does “condensation releases heat” mean?
In meteorology it is said that in an air parcel cooled below dew point, condensation "releases heat". What does "releases" mean? to where? If the heat results in a rise of temperature, what gets ...
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1answer
83 views
Phase transition water
The water-gas phase transition is said to be similar to the ferromagnetic-paramagnetic phase transition (same set of critical exponents = same universality class). In the former case the order ...
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0answers
51 views
Spin Glass Transitions in Random Bond Ising Model (RBIM)
In brief, is there a list of spin glass transition properties for the RBIM on different lattices? Is there any know results about the relationships between these probabilities for a graph and its ...
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2answers
81 views
Any example of lower symmetry in high temperature phase than the low temperature phase?
All the phase transition cases I came across so far have this property: the lower temperature phase has lower symmetry than the higher temperature one. But it is nowhere explicitly said that, lower ...
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2answers
159 views
Ising Ferromagnet: Spontaneous symmetry breaking or not?
In explaining/introducing second-order phase transition using Ising system as an example, it is shown via mean-field theory that there are two magnetized phases below the critical temperature. This ...
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1answer
121 views
Order of phase transition: Which free energy to use?
I am unclear about the adjective "first" or "second" used in phase transitions. Take the liquid-gas transition for example. If we vary the volume of the system at constant T, at some point we will ...
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2answers
196 views
Order of phase transitions
I got to read things like
In case of a first order phase transition, the volume and temperature change in a discontinuous manner. However for phase transitions of higher order the change in ...
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1answer
187 views
Clausius Clapeyron equation
While reading about the Clausius Clapeyron equation from the Feynman lectures on Physics, I couldn't understand a few things from its derivation:
Although the argument was pretty clear, when the ...
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2answers
234 views
Can a first order phase transition have an order parameter?
Order parameter is used to describe second order phase transition. It seems that in some papers it is used in the first order phase transitions. Can first order phase transition have an order ...
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2answers
106 views
Why is a critical system equal to a gapless system?
In condensed matter physics, people often say that a system without energy gap is a critical system. What does it mean?
Any help is appreciated!
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1answer
96 views
Evaporation of water content from a solid material by applying low pressure
I have a raw material which melts at $96\ ^\circ C$. My aim is to make water content evaporate at temperature below this temperature.
I can apply vaccume oven for this. I want to know at what pressure ...
3
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1answer
202 views
Does a quantum phase transition have latent heat?
As the title says, I am thinking about the question that whether a quantum phase transition has latent heat. If so, at 0 temperature, we can drive the system by some parameter from disorder phase to ...
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1answer
106 views
How can gas from compressed air can “take” heat from surrounding environment?
I have recently been reading about why a can of compressed air gets cold when the air it contains is discharged. From what I understand the change from a liquid to a gas requires energy and therefore ...
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1answer
46 views
Is there a limit on how hot you can superheat water at 1 atm?
Is there a limit on how hot you can superheat water at 1 atm in a perfect container? What about in a microwave?
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1answer
114 views
Question on inflation as a phase transition
I have just finished watching the following video http://www.youtube.com/watch?v=beQ9fZ0jVdE where Laughlin, Gross and some students discuss e.g. about inflation. The following question is risen:
Is ...
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1answer
178 views
Lennard Jones liquid vapour phase transition
I am trying to generate a phase diagram of pressure versus temperature in a NPT ensemble using molecular dynamics method. I am using the Lennard Jones potential with 108 particles and Berendsen ...
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1answer
195 views
Reasons for violation of universality in statistical mechanics
The Universality in statistical mechanics is nicely explained by the renormalization group theory. However, there are fair amount of numerical and theoretical studies show that it can be violated in ...
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1answer
79 views
Parameter determining argon phase
Currently I am working a molecular simulation to determine phases of an argon NPT ensemble using Lennard Jones potential. Mainly I use the radial distribution function to determine solid, liquid, or ...
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3answers
362 views
Freezing point depression - cooling my drink with the same method as salt on a highway?
I understand that adding/sprinkling, say NaCl, on a highway depresses the freezing point by making any moisture on the road harder to freeze as the NaCl molecules get in the way of phase transition. ...
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Voyager 1 cosmic ray strips
In the last months Voyager 1 has experienced a dramatic drop in the cosmic ray radiation, which was been exceptionally uniform for the last 10 years, except for the past july 28 and august 14 events, ...
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1answer
117 views
Is the liquid/solid line infinite?
Starting from the triple point, is the melting line between solid-phase and liquid-phase infinite? If not, why does it end? Because pressures are so high that classical inter-molecular interactions ...
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Order of magnetic phase transitions
Is there any phase transition occur in paramagnetism to diamagnetism transitions state. What should be the order and how will I calculate the order?
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107 views
Phase diagram problem for ternary system
For a ternary system, three composites are present.
Temperature is also a variable.
Assuming that pressure is held constant, what is the minimum number of phases that may be present in a ternary ...
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3answers
269 views
First order phase transition in a classical system
I've never liked discontinuous quantities in classical physics, so I find the discontinuity in heat capacity weird.
My question is, do first order phase transitions ever really exist? Or are our ...
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Griffiths phase
What are Griffiths effects in the context of condensed matter physics?
From a cursory examination of the literature I've gathered the following: it seems that ordered systems have a "clean" critical ...
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0answers
84 views
Can critical slowing down be used to distinguish between first and second order phase transitions?
We are simulating a percolation dynamic system where we obtain first or second order phase transitions depending on certain parameters. For certain values it is clear that we are in the first-order ...
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1answer
61 views
Limits of superfluidity
Superconductivity has limits of currents and magnetic fields they can endure before dropping the superconductivity phase
What are the corresponding limits of superfluidity? what are the limit ...
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2answers
258 views
What is a bulk phase transition?
I have been able to google "bulk phase transition" and get plenty of results that verify that something called a bulk phase transition exists, however, I cannot seem to find a precise definition of ...
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4answers
119 views
What is the simplest system that has both, discontinous and continous phase transitions?
I am looking the simplest system that has both discontinous phase transition and a continous phase transition between the same phases (you can change one parameter).
discontinous transition: first ...
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1answer
213 views
Salt and boiling speed
When we add a compound (salt) to a solvent, the boiling points rises. But, what could we say about the speed the solvent reaches the boiling point? It's better to add salt before or after boiling ...
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1answer
374 views
What makes water boil?
Basically how boiling takes place?
Also like to know...
What makes boiling point alter at various altitudes?
Why bubbles rise through boiling water?
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58 views
How is pool boiling dealt with by today's process design methods?
Designing evaporators and industrial reboilers often requires at initial stages of dimensioning (i.e. when the support from a finite element software tool to model the system of interest, isn't yet ...
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2answers
365 views
Latent heat vs temperature of phase transitions?
Is the latent heat associated with phase transitions correlated with the temperature at which they occur?
The latent heat is related to the difference in energy between the two phases, and the ...
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1answer
285 views
Mean-field theory in 1D Ising model
A mean-field theory approach to the Ising-model gives a critical temperature $k_B T_C = q J$, where $q$ is the number of nearest neighbours and $J$ is the interaction in the Ising Hamiltonian. Setting ...
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4answers
260 views
Water to ice expansion in $1\textrm{mm}^3$ pit - pressure on the pit walls?
[EDITED] by mistake, the subject was regarding 1m^3 instead of 1mm^3. There should be a significant difference between the two...
A 1x1x1mm pit filled with water is frozen at a slow rate (1K/minute). ...
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Goldstone modes and Heisenberg model
The ideia is to show that, because of Goldstone modes, 2d systems are quite different from 3d ones. So, considering the Heisenberg model, I'll post here what I'm asked to and my current thoughts on ...
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2answers
272 views
What causes a Phase-Transition
A phase transition occurs when for example, heat is applied continuously to a liquid and after a certain time it converts into a gas.
How does this process work in detail? Is their a chain reaction ...
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4answers
709 views
What happens to water level when ice XII melts?
There exists this famous idea that if all floating icebergs melt, water level will stay the same (because the water replaced by ice is the volume of the melted ice). Now,
Is this always so, if you ...
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1answer
112 views
What kind of phases nanoparticles have (gas-solid-liquid)?
If a phase transition requires a number of particles that is in the TD-limit, can nanoparticles (~10 atoms) have phase transitions? What kind of phases and transitions nanoparticles have?
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How many particles is needed to observe a phase transition?
This is a question that was rised when we were discussing "what is melting actually". How many particles you need to form a liquid or solid. I have some remarks to point out what I want to know.
Q: ...
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1answer
784 views
Why is boiling water loud, then quiet?
Water in my electric kettle makes the most noise sixty to ninety seconds before the water comes to a full boil. I have been fooled many times by the noisy kettle, only to discover that the water was ...
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1answer
167 views
About Holographic Model of Magnetism and Superconductor
I have a question about this paper http://arxiv.org/abs/1003.0010
In their model,
when consider holographic paramagnetic-ferromagnetic phase transition,
they need Yang-Mills field itself to ...
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1answer
109 views
renormalization group in d=3
Do we really understand why the renormalization group in $d=2+\varepsilon$ and $d=4-\varepsilon$ taking $\varepsilon=1$ gives "good" values for critical exponents in $d=3$? Are they exceptions?
Is it ...
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1answer
85 views
nature of glass transition
I am reading in some book: "The glass transition is similar in appearance to a second-order phase transition, but it is not a true thermodynamic phase transition. This is because the transition ...
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0answers
51 views
Why/When can the gauge superfield and/or chiral superfield kinetic term in $(2,2)$ SUSY be ignored?
This is in reference to the argument given towards the end of page $61$ of this review paper. There for the path-integral argument to work the author clearly needed some argument to be able to ignore ...
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From vertex function to anomalous dimension
In a $d$ dimensional space-time, how does one argue that the mass dimension of the $n-$point vertex function is $D = d + n(1-\frac{d}{2})$?
Why is the following equality assumed or does one prove ...
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1answer
194 views
Does a negative line tension in a 3-fluid immiscible interface make sense?
This question is inspired by this question/answer pair: Is this formula for the energy of a configuration of 3 fluids physically reasonable?
Consider three immiscible fluids forming contact surfaces, ...
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1answer
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How do I determine when this object is about to get covered in dew? I can measure the environment parameters
There is a large disk of glass sitting outside, it is pretty thick and wide. Via different sensors hooked up to a controller, I can measure the air temperature, glass temperature (on the surface), and ...
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1answer
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Which bonds are the cross-links and which are secondary bonds (in elastomers)? [closed]
Elastomeres are "defined" as:
"linear-chain polymers with widely spaced cross-links attaching each molecule to its neighbours"
Now I found sentences (talking about glass transition):
"This means ...
