article

E

E.K.Elmaghraby

Guest
Dear All
I published an article entitled
On the Quantum Statistical Distributions Describing Finite Fermions
and Bosons Systems
and i need to know your opinion.

here is the link

http://www.scirp. org/journal/ PaperInformation .aspx?paperID= 8627

best regards
 
On Thu, 8 Dec 2011 04:40:52 -0800 (PST), "E.K.Elmaghraby"
<e.m.k.elmaghraby@gmail.com> wrote:

Dear All
I published an article entitled
On the Quantum Statistical Distributions Describing Finite Fermions
and Bosons Systems
and i need to know your opinion.

here is the link

http://www.scirp. org/journal/ PaperInformation .aspx?paperID= 8627

best regards
Click to expand...
This is a basic group, many here, including myself get a headache
reading stuff like that.
I did clean up your link though.
http://www.scirp.org/journal/PaperInformation.aspx?paperID=8627


Tom
 
On 12/08/2011 07:40 AM, E.K.Elmaghraby wrote:
Dear All
I published an article entitled
On the Quantum Statistical Distributions Describing Finite Fermions
and Bosons Systems
and i need to know your opinion.

here is the link

http://www.scirp. org/journal/ PaperInformation .aspx?paperID= 8627

best regards
Click to expand...
This is a basic teaching group, not a basic research group. However FWIW:

On a quick read, the basic premise of this paper seems to be flawed.
You're using higher order terms of the Stirling formula for the
factorial in order to calculate the BE and FD statistics of small
systems, which is fair enough, even if it isn't new. (Those
approximations are fodder for every undergraduate statistical mechanics
class.) As you correctly point out, the lowest-order Stirling
approximation is appropriate for extensive systems (i.e. where the
number of particles is very large).

The conceptual flaw is that you then turn these finite-N results into a
lower temperature limit, when temperature itself is only well defined in
the large-N limit.

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC
Optics, Electro-optics, Photonics, Analog Electronics

160 North State Road #203
Briarcliff Manor NY 10510
845-480-2058

hobbs at electrooptical dot net
http://electrooptical.net
 
On Thu, 08 Dec 2011 18:26:02 -0500, Phil Hobbs
<pcdhSpamMeSenseless@electrooptical.net> wrote:

On 12/08/2011 07:40 AM, E.K.Elmaghraby wrote:
Dear All
I published an article entitled
On the Quantum Statistical Distributions Describing Finite Fermions
and Bosons Systems
and i need to know your opinion.

here is the link

http://www.scirp. org/journal/ PaperInformation .aspx?paperID= 8627

best regards

This is a basic teaching group, not a basic research group. However FWIW:

On a quick read, the basic premise of this paper seems to be flawed.
You're using higher order terms of the Stirling formula for the
factorial in order to calculate the BE and FD statistics of small
systems, which is fair enough, even if it isn't new. (Those
approximations are fodder for every undergraduate statistical mechanics
class.) As you correctly point out, the lowest-order Stirling
approximation is appropriate for extensive systems (i.e. where the
number of particles is very large).

The conceptual flaw is that you then turn these finite-N results into a
lower temperature limit, when temperature itself is only well defined in
the large-N limit.

Cheers

Phil Hobbs
Click to expand...
You're giving me a headache Doc:)
 
E.K.Elmaghraby wrote:
Fermions and Bosons

1) What is about "sci.electronics.basics"
Click to expand...
that is difficult for you to understand?

2) Is your ego so fragile
that you won't post this in a group with "physics" in its name?

3) When writing a post,
put something MEANINGFUL on the Subject line

4) Learn how to construct a hyperlink.

5) Proofread your posts before hitting Send.

6) Don't post the same shit multiple times.

Pffff. Yet another clueless Google Grouper.
 
On Dec 9, 1:26 am, Phil Hobbs <pcdhSpamMeSensel...@electrooptical.net>
wrote:
On 12/08/2011 07:40 AM, E.K.Elmaghraby wrote:

Dear All
I published an article entitled
On the Quantum Statistical Distributions Describing Finite Fermions
and Bosons Systems
and i need to know your opinion.

here is the link

http://www.scirp. org/journal/ PaperInformation .aspx?paperID= 8627

best regards

This is a basic teaching group, not a basic research group.  However FWIW:

On a quick read, the basic premise of this paper seems to be flawed.
You're using higher order terms of the Stirling formula for the
factorial in order to calculate the BE and FD statistics of small
systems, which is fair enough, even if it isn't new.  (Those
approximations are fodder for every undergraduate statistical mechanics
class.)  As you correctly point out, the lowest-order Stirling
approximation is appropriate for extensive systems (i.e. where the
number of particles is very large).

The conceptual flaw is that you then turn these finite-N results into a
lower temperature limit, when temperature itself is only well defined in
the large-N limit.

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC
Optics, Electro-optics, Photonics, Analog Electronics

160 North State Road #203
Briarcliff Manor NY 10510
845-480-2058

hobbs at electrooptical dot nethttp://electrooptical.net
Click to expand...

Thanks, Phil Hobbs, for your positive reply
In equilibrium statistical mechanics, temperature is related
to the total kinetic energy of the system as well as the
number density of the particles whatever the total number
of constituting particles. By cooling particles to lower
temperature it energy is lowered. So, when we say
temperature we mean energy density; this is the trick.
On the other hand, the exact derivation is used in the
calculation not the higher order approximation of Stirling’s
formula. The later is used only at two specific points n=0
and n=1, in which it has reasonable values.

Best regards
E.K. Elmaghraby
 
On Dec 9, 1:09 am, Tom Biasi <tombi...@optonline.net> wrote:
On Thu, 8 Dec 2011 04:40:52 -0800 (PST), "E.K.Elmaghraby"

e.m.k.elmaghr...@gmail.com> wrote:
Dear All
I published an article entitled
On the Quantum Statistical Distributions Describing Finite Fermions
and Bosons Systems
and i need to know your opinion.

here is the link

http://www.scirp.org/journal/ PaperInformation .aspx?paperID= 8627

best regards

This is a basic group, many here, including myself get a headache
reading stuff like that.
I did clean up your link though.http://www.scirp.org/journal/PaperInformation.aspx?paperID=8627

Tom
Click to expand...
That is correct, Thanks Tom,
 
On 12/09/2011 06:13 AM, E.K.Elmaghraby wrote:
On Dec 9, 1:26 am, Phil Hobbs<pcdhSpamMeSensel...@electrooptical.net
wrote:
On 12/08/2011 07:40 AM, E.K.Elmaghraby wrote:

Dear All
I published an article entitled
On the Quantum Statistical Distributions Describing Finite Fermions
and Bosons Systems
and i need to know your opinion.

here is the link

http://www.scirp. org/journal/ PaperInformation .aspx?paperID= 8627

best regards

This is a basic teaching group, not a basic research group. However FWIW:

On a quick read, the basic premise of this paper seems to be flawed.
You're using higher order terms of the Stirling formula for the
factorial in order to calculate the BE and FD statistics of small
systems, which is fair enough, even if it isn't new. (Those
approximations are fodder for every undergraduate statistical mechanics
class.) As you correctly point out, the lowest-order Stirling
approximation is appropriate for extensive systems (i.e. where the
number of particles is very large).

The conceptual flaw is that you then turn these finite-N results into a
lower temperature limit, when temperature itself is only well defined in
the large-N limit.

Cheers

Phil Hobbs


Thanks, Phil Hobbs, for your positive reply
In equilibrium statistical mechanics, temperature is related
to the total kinetic energy of the system as well as the
number density of the particles whatever the total number
of constituting particles. By cooling particles to lower
temperature it energy is lowered. So, when we say
temperature we mean energy density; this is the trick.
On the other hand, the exact derivation is used in the
calculation not the higher order approximation of Stirling’s
formula. The later is used only at two specific points n=0
and n=1, in which it has reasonable values.

Best regards
E.K. Elmaghraby
Click to expand...
If you read my response as positive, you must have been getting some
pretty nasty ones elsewhere. If I'd been the reviewer, I'd have
recommended rejecting it as misconceived and not very original.

Of course you're not entirely alone there--when I was a graduate
student, I once had to withdraw a paper on imaging theory when I
discovered that the main result had been published in the 1880s by Lord
Rayleigh!

(One of my less merciful colleagues asked me, "So, Phil, how does it
feel to be in the forefront of 19th Century science?")

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC
Optics, Electro-optics, Photonics, Analog Electronics

160 North State Road #203
Briarcliff Manor NY 10510
845-480-2058

hobbs at electrooptical dot net
http://electrooptical.net
 
On Dec 9, 8:00 pm, Phil Hobbs <pcdhSpamMeSensel...@electrooptical.net>
wrote:
On 12/09/2011 06:13 AM, E.K.Elmaghraby wrote:









On Dec 9, 1:26 am, Phil Hobbs<pcdhSpamMeSensel...@electrooptical.net
wrote:
On 12/08/2011 07:40 AM, E.K.Elmaghraby wrote:

Dear All
I published an article entitled
On the Quantum Statistical Distributions Describing Finite Fermions
and Bosons Systems
and i need to know your opinion.

here is the link

http://www.scirp. org/journal/ PaperInformation .aspx?paperID= 8627

best regards

This is a basic teaching group, not a basic research group.  However FWIW:

On a quick read, the basic premise of this paper seems to be flawed.
You're using higher order terms of the Stirling formula for the
factorial in order to calculate the BE and FD statistics of small
systems, which is fair enough, even if it isn't new.  (Those
approximations are fodder for every undergraduate statistical mechanics
class.)  As you correctly point out, the lowest-order Stirling
approximation is appropriate for extensive systems (i.e. where the
number of particles is very large).

The conceptual flaw is that you then turn these finite-N results into a
lower temperature limit, when temperature itself is only well defined in
the large-N limit.

Cheers

Phil Hobbs

Thanks, Phil Hobbs,  for your positive reply
In equilibrium statistical mechanics, temperature is related
to the total kinetic energy of the system as well as the
number density of the particles whatever the total number
of constituting particles. By cooling particles to lower
temperature it energy is lowered. So, when we say
temperature we mean energy density; this is the trick.
On the other hand, the exact derivation is used in the
calculation not the higher order approximation of Stirling’s
formula. The later is used only at two specific points n=0
and n=1, in which it has reasonable values.

Best regards
E.K. Elmaghraby

If you read my response as positive, you must have been getting some
pretty nasty ones elsewhere.  If I'd been the reviewer, I'd have
recommended rejecting it as misconceived and not very original.

Of course you're not entirely alone there--when I was a graduate
student, I once had to withdraw a paper on imaging theory when I
discovered that the main result had been published in the 1880s by Lord
Rayleigh!

(One of my less merciful colleagues asked me, "So, Phil, how does it
feel to be in the forefront of 19th Century science?")

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC
Optics, Electro-optics, Photonics, Analog Electronics

160 North State Road #203
Briarcliff Manor NY 10510
845-480-2058

hobbs at electrooptical dot nethttp://electrooptical.net
Click to expand...
Thanks Phil,
But what you read was not published before, no one menstiened
about it before. Your reply was positive because it discuses it
scientifically.
Now, your reply does not contain science at all. Because, if you read
more,
you can find that the recent results of cooled fermions-bosons mixture
is
the new hot topic in physics. I would direct you to some lectures, if
you want to read:

Science 2011 Oct 07, page 66-68
Nature, Vol 435 - 23 June 2005 doi:10.1038/nature03858, page 1047-1051
Science 285, 1703 (1999);
SCIENCE VOL 285, 10 SEPTEMBER 1999 pages 1703 –
NATURE, 26 NOVEMBER 2003, page 1
Science 30 MARCH 2001 VOL 291 pages 2570-72
SCIENCE VOL 300 13 JUNE 2003 pages 13-16
Phys. rev. lett. 91 , 160401 (2003)
New Journal of Physics 12 (2010) 063038
PHYSICAL REVIEW C, VOLUME 62, 064603
PRL 104, 053202 (2010)
J. Phys. Chem. B 2007, 111, 8946-8958
Physics Letters A 342 (2005) 286–293
Physics Letters A 374 (2010) 4581–4584
Journal of Low Temperature Physics, Vol. 132, Nos. 3/4, August 2003
J Low Temp Phys (2009) 154: 1–29
Optics Communications 264 (2006) 321–325
Physica A 357 (2005) 427–435
Physics Letters A 363 (2007) 487–491
Physics Letters A 326 (2004) 252–258
Physics Letters A 373 (2009) 2471–2475
Physica A 354 (2005) 371–380
Physics Letters A 372 (2008) 2048–2049
Theoretical and Mathematical Physics, 154(1): 123–136 (2008)
Physics Letters A 375 (2011) 2979–2984
Annals of Physics 323 (2008) 2987–2990
Physica C 470 (2010) S982–S983
Optics Communications 243 (2004) 3–22
Nuclear Physics B 846 [FS] (2011) 122–136
Nuclear Physics A 830 (2009) 665c–672c
Physics Reports 464 (2008) 71–111

I am tired now can I complete later. ….
 
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