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<article xmlns:xlink="http://www.w3.org/1999/xlink">
  <front>
    <journal-meta />
    <article-meta>
      <title-group>
        <article-title>Unified Field Theory of Electroweak, Strong, and Gravitational Interactions*</article-title>
      </title-group>
      <contrib-group>
        <aff id="aff0">
          <label>0</label>
          <institution>V.I. Vernadsky Crimean Federal University</institution>
          ,
          <country country="RU">Russia</country>
        </aff>
      </contrib-group>
      <fpage>0000</fpage>
      <lpage>0001</lpage>
      <abstract>
        <p>In this paper, we are given a new interpretation of a simple gravity and gauge fields as the connections to the fiber bundle, a given change in the basis vectors, and the base layer with an infinitely small displacement in the database. Introduction of the interaction of gauge fields and the quarks and leptons based on the interpretation of leptons and quarks as vectors and tensors in the space layer. The dynamics of gauge fields and gravity introduced based on the equations of mechanics Cartan using a symplectic metric that unites gravity and gauge fields together.</p>
      </abstract>
      <kwd-group>
        <kwd>Gauge Theory</kwd>
        <kwd>Electroweak Interactions</kwd>
        <kwd>Metric</kwd>
        <kwd>Gravitation</kwd>
        <kwd>connectivity</kwd>
      </kwd-group>
    </article-meta>
  </front>
  <body>
    <sec id="sec-1">
      <title>Introduction</title>
      <p>
        Attempts to build a unified theory of all interactions, a unified field theory, began before
Einstein created the General theory of relativity. The first of the interaction theories
was the theory of electromagnetism, created by Maxwell in 1863. In 1915, Einstein
formulated the General theory of relativity describing the gravitational field. Just as
Maxwell was able to create a General description of electrical and magnetic
phenomena, the idea of building a unified theory of fundamental interactions arose. This
problem was posed by D. Gilbert. Einstein proposed a large number of options for
unification gravity and the electromagnetic field [
        <xref ref-type="bibr" rid="ref1 ref2 ref3 ref4 ref5 ref6 ref7">1-7</xref>
        ]. In the first half of the twentieth century,
numerous attempts were made to create such a theory. However, no satisfactory models
were put forward. This is because in General relativity, gravity is a curvature of
spacetime, and electromagnetism has all the attributes of matter. However, in our opinion,
this unification was most successfully achieved in [
        <xref ref-type="bibr" rid="ref8">8</xref>
        ], [
        <xref ref-type="bibr" rid="ref10 ref11 ref9">9-11</xref>
        ], where gravity and
electromagnetism were combined in a pseudo-Riemannian metric of a 5-dimensional
differentiable manifold, and in a more modern version of the union in [
        <xref ref-type="bibr" rid="ref12">12</xref>
        ], where gravity
*
and electromagnetism were combined into a single electro-gravitational connection
also in the space of 5-dimensions.
      </p>
      <p>In the second half of the XX century, due to the discovery of weak and strong
interactions, the task of building a unified theory became more complicated. In 1967, Salam
and Weinberg created the theory of electroweak interaction, combining
electromagnetism and weak interactions. In 1973, a theory of strong interactions (quantum
chromodynamics) was proposed. On their basis, a Standard model of elementary particles
was built, describing the electromagnetic, weak, and strong interactions.</p>
      <p>
        After Weinberg, Salam, and Glashow created the theory of electro-weak
interactions, as well as quantum chromodynamics, the need for a new approach to a unified
field theory became clear, consisting of combining electro-weak interaction with
quantum chromodynamics and the theory of gravity [
        <xref ref-type="bibr" rid="ref13 ref14 ref15 ref16">13-16</xref>
        ]. The possibility of such
unification lies in the analogy that exists between the Yang-Mills theory and the relativity
theory, and the fact that both the theory of electro-weak interaction and quantum
chromodynamics contain the Yang-Mills theory [
        <xref ref-type="bibr" rid="ref17 ref18 ref19 ref20">17-20</xref>
        ]. It is not possible to generalize the
works [
        <xref ref-type="bibr" rid="ref8">8</xref>
        ] and [
        <xref ref-type="bibr" rid="ref12">12</xref>
        ] to electroweak interaction and chromodynamics.
2
      </p>
      <p>Field Theory of Electroweak, Strong, and Gravitational
Interactions</p>
      <p>
        However, in 5-dimensional space, you can easily introduce electro-gravitational
connectivity, namely, by requiring:
(1)
(2)
(3)
where   0,3 ;   0,3 ,   0,3 [
        <xref ref-type="bibr" rid="ref18 ref19 ref20">18-20</xref>
        ],
d      dx  ,
      </p>
      <p>
         
de4  Ae4 ,
thus, we set the electro-gravitational connectivity in 5-dimensional space ( , A ),
  F dx – describes infinitesimal changes in the reference vectors of space-time,
that is, gravity, when moving from one point of space-time to another infinitely close
point. It is assumed that a four-dimensional space-time is embedded in a 5-dimensional
manifold. At each point of this manifold, a linearly independent with  a ,   0,3 ,
the vector e4 is chosen, whose changes during the transition from one point of
spacetime to another infinitely close point are described by the 1 - form of electromagnetic
field A, d – external differential [
        <xref ref-type="bibr" rid="ref20">20</xref>
        ]. Externally differentiating the equalities (1) and
(2), we get an expression for the curvature of space-time, that is, gravity and the 2-form
of the electromagnetic field:
      </p>
      <p>d 2  R   d    d  d    ,
in this way
d 2e4  dAe4  A  Ae4  Fe4 ,</p>
      <p>R  d    ,</p>
      <p>
        F  dA [
        <xref ref-type="bibr" rid="ref20">20</xref>
        ]
0 
      </p>
      <p>
dg
</p>
      <p>
d 1
</p>
      <p>
d 


d 1


d 

 
  

 d 1   R  1 g R  T  dx 4 </p>
      <p> 2 
 dg       d         R  d 1 </p>
      <p>4
 d 2   F, </p>
      <p> c
1
 dA  2 F dx  dx .</p>
      <p>J  dx 4  d 2 </p>
      <p>
        
Thus, in space-time embedded in a 5-dimensional manifold, connectivity is introduced
that describes both gravity and the electromagnetic field. The Hilbert-Einstein equation
in GRT, as well as the Maxwell equations, are reduced to a single system of Cartan
equations for the symplectic metric [
        <xref ref-type="bibr" rid="ref21 ref22 ref23">21-23</xref>
        ]:
 d     R   x  d1  d  x 
    g dxdg    d1   R  1 g R  T  dx 4  
  2  

 d 2   F, 

4 J  dx 4  
c  
      </p>
      <p> 1 
 d  x  d 2  d 1   dA  2 F dx  dx  x.</p>
      <p>  
Here:  , ,  0,3 ; dx 4 – volume differential in our 5-dimensional space;
dx4    0,   0,3 ; dx4 e4   1; dx  dx0  dx1  dx2  dx3 ,  – E. Cartan's
external multiplication sign; g  Det g , T  – dark matter and dark energy
energymomentum tensor; 1 , 2 ,  ,  , , 1 – auxiliary tensor fields; F, – the
covariant divergence of a tensor F ; J  – 4-vector of electric current.</p>
      <p>
        Cartan's equations for this symplectic metric have the form [
        <xref ref-type="bibr" rid="ref19">19</xref>
        ]:
(4)
(5)
(6)
(7)
(8)
From Cartan's system of equations (8), a system of equations describing both gravity
and electromagnetism is obtained.
      </p>
      <p>Hilbert-Einstein equation for the gravitational field:
a condition that the connectivity  is metric:
connection of connectivity   with the curvature of space-time R :

(9)
(10)
(11)
(12)
(13)
(14)
(15)
(16)
Maxwell equation:</p>
      <p>1
dA 
2</p>
      <p>F dx  dx ,
F   4
, c</p>
      <p>J  .</p>
      <p>
        In contrast to [
        <xref ref-type="bibr" rid="ref2">2</xref>
        ], this version of the theory of electro-gravitational connectivity can be
generalized to a Unified Field Theory, which includes, in addition to the theory of
gravity, the theory of electro-weak interactions and quantum chromodynamics.
      </p>
      <p>To prove this, consider combining the theory of gravity with two gauge fields into a
unified gravitational-gauge connection. To do this, put a 4-dimensional GRT
spacetime in the space of 4+2n dimensions. On the four space-time reference points, we set
the connectivity (1), and on the 2n vectors that come out of space-time, we set the
connectivity:
~
where m, s  1, n , a 1, , gˆ1 – calibration field charge operator Aa M a1 ,
M a1ms   square matrices n n .</p>
      <p>des  ~1msem ,</p>
      <p>
~ m  igˆ1 A~ a M a1ms ,</p>
      <p>1 s
dens  igˆ2BbMb2nnmsenm ,</p>
      <p> ~</p>
      <p>Thus, calibration fields, with accuracy to a constant, are a connectedness that
de
scribes the change of reference vectors es , s  1,2n when moving from one point in
space-time to another infinitely close point.</p>
      <p>
        The curvature of connectivity (15) and (17) is calculated in the same way as
connectivity (1) using the formula (5):
(17)
(18)
(19)
(20)
(21)
Here Gd  1 Gd  dx  dx are 2-form of the calibration field, we have taken into
ac2
count the relations between operators of the Lie group M a1 [
        <xref ref-type="bibr" rid="ref24">24</xref>
        ], whose representation

operates in a space stretched based on e m , m  1, n :
Similarly, you can calculate the curvature of the connection (17):
      </p>
      <p>Ma1, Mb1  iC1d abMd1 .</p>
      <p>R2ms  igˆ2 12  Bd   Bd  g~2Ca2bd Ba Bb dx  dx M d2ms 
  igˆ2 Fd dx  dx M d2ms  igˆ2F d M d2ms.</p>
      <p>2
R1mn  d~1nm  ~1ns  ~1ns  igˆ1dAaM a1nm  gˆ12 A~a  AbM a1msM b1ns </p>
      <p>~ ~
 ig~1dA~d  igˆ1 1 iC1d ab A~a  A~b M d1 </p>
      <p> 2 
 igˆ1 1  Ad   Ad  gˆ1Ca1bd Aa Ab dx  dx M d1 nm </p>
      <p>2
  igˆ1 Gd dx  dx M d1 nm  ig~1Gd M d1 nm.</p>
      <p>2
Here F d  12 Fd dx  dx – 2-form of the calibration field, we have taken into account
the relations between generators of the Lie group Ma2 , the representation of which
op
erates in a space stretched based on enт , m  1,n :</p>
      <p>Ma2, Mb2   iC2d abMd2.</p>
      <p>A mathematical model of the interaction of these gauge fields with leptons and quarks
can be constructed if we consider vector fields in a space stretched on a basis em:
 
   mem as a mathematical model of leptons. Here these components of the vectors
m are bispinors. In this case</p>
      <p> 
d  dmem  mdem  dm ~1mss e .
m
Consider the values of the components of this vector, which are 1-forms, on the vector
i   :
dgm ~1msgs i     i   gm  ig1AaMa1msgs  mgm  0.</p>
      <p>1 1 1 1 1
 m
Here g1 and g 1 are eigenvectors and operator values gˆ1. Equation (22) describes a
fermion interacting with only one calibration field. Therefore, this is a mathematical
model of a lepton interacting only with an electroweak gauge field.</p>
      <p>As a mathematical model of quarks, consider the tensor field:
gm1 gs2 em  ens  gm1 gs2 em  es.</p>
      <p> 
(22)
(23)
The external differential of this field has the form:
dgm1 gs2 em  es  gm1 gs2 dem  es  gm1 gs2 em  des </p>
      <p>   
 dgm1 gs2  ~1m pgp1sg2  ~2s pgm1gp2 em  es.</p>
      <p> 
Consider the values of the components of this tensor, which are 1-forms, on the vector
i   :
i   gm1gs2  ig1AaM a1mp gp1sg2  ig2Bb M b2nmn pgs1pg2  mgm1gs2  0,
(24)
Where gm1gs2 and g1 , g2 are eigenvectors and values of the operators gˆ1 and gˆ 2 :
g1, g 2   0
(25)
Here: 11 – density operator for the number of particles generating the calibration
field Ga , 22 – densityoperator for the number of particles generating the
calibration field Fa ,  – standard  –matrices included in the Dirac equation,
1d ,2d,1a , 2a,1a,2a – auxiliary function,  and are coefficients that
1 2
link currents and the calibration fields they generate, x4– auxiliary parameter.</p>
      <p>Cartan's equations for the symplectic metric (25) have the form:
0 

</p>
      <p>1  1  1  1 
dg x d1 x d x  x
1  1  1  1 
d1d x d2d x d1a x da2 x
1</p>
      <p>
da1 x d2ax
1  d1 R  1 gR T dx4 
 dg    d1  d    R 
 Gd   Ad   Ad  gˆ1C1abd AaAbdx4 
 Fd  Bd   Bd  gˆ2C2abdBaBbdx4 
 da2 Fa igˆ2BbFcCa2bc 2gˆ22 M 2a2dx4 </p>
      <p>
 d1a Ga igˆ1AbGcC1abc 1gˆ11 M1a1dx4  d1a  da2 .

(26)
This system of Cartan equations is equivalent to the system of gravitational field
equations:</p>
      <p>R  1 g R  T</p>
      <p>
        2
and a system of equations for two calibration fields [
        <xref ref-type="bibr" rid="ref25 ref26 ref27 ref28 ref29 ref30 ref31">25-31</xref>
        ]
      </p>
      <p>Gd    Ad   Ad  gˆ1C1abd Aa Ab 

 Ga  igˆ1AbGc C1abc  1gˆ11 M 1a1 
Fd   Bd   Bd  gˆ2C 2abd Ba Bb 

 Fa  igˆ2Bb F c Ca2bc   gˆ   M a22 
2 2 2
(27)
(28)
Two gauge fields Gd and Fd are taken in the most General form with arbitrary
structural constants Cabd and Ca2bd since if in our local Universe they have certain values
1
and describe electro-weak and gluon gauge fields, then in other local Universes they
can have other and arbitrary values. Quarks and leptons can also be reduced to the gauge
fields by the transformation of supersymmetry.
3</p>
    </sec>
    <sec id="sec-2">
      <title>Conclusion</title>
      <p>
        Thus, the results obtained in this paper are similar to those obtained in [
        <xref ref-type="bibr" rid="ref32">32</xref>
        ]. That is,
all the interactions included in the Standard model of elementary particle physics
(electroweak and strong interactions) and gravity are combined into a single bond in the
stratified space, and it is indicated how fermions can be included in the theory. But,
unlike the work [
        <xref ref-type="bibr" rid="ref32">32</xref>
        ], it is made much easier, since it is based on the famous works of
E. Cartan [
        <xref ref-type="bibr" rid="ref21 ref23">21,23</xref>
        ]. While Lisi used complex manipulations with connections arising
within the E8 Lie group (although such connections also go back to the works of E.
Cartan).
      </p>
    </sec>
  </body>
  <back>
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